Indulge in the ultimate chocolate experience with this sensational **Chocolate Buttermilk Bundt Cake**! This isn’t just any chocolate cake; it’s a masterpiece of texture and flavor, designed to captivate your senses. Thanks to the magic of buttermilk and a generous splash of vegetable oil, every slice boasts an unbelievably moist and tender crumb that practically melts in your mouth. The secret to its profound chocolate richness lies in the age-old technique of “blooming” cocoa powder, which intensifies the flavor to an extraordinary degree.
But the perfection doesn’t stop there. Crowned with a gorgeously smooth and glossy chocolate ganache frosting, this bundt cake is a visual delight. The ganache cascades elegantly down its fluted sides, creating an inviting presentation that promises pure decadence. Whether it’s for a special occasion or a simple craving, this recipe delivers chocolate cake perfection every single time.
Are you a fan of the charming bundt pan? Unleash your creativity with other delightful bundt cake recipes! Be sure to explore our collection, including the cozy Apple Cider Bundt Cake, the vibrant Lemon Poppy Seed Bundt Cake, the exotic Blood Orange Cardamom Bundt Cake, or the festive Gingerbread Bundt Cake. There’s a perfect bundt for every season and celebration!

Why This Chocolate Buttermilk Bundt Cake Recipe Works Wonders
This Chocolate Buttermilk Bundt Cake isn’t just delicious; it’s meticulously crafted with specific techniques and ingredients that guarantee its exceptional flavor and texture. Here’s a closer look at what makes this recipe a true standout:
- Unmatched Moistness and Tender Crumb: The use of buttermilk in conjunction with vegetable oil is a game-changer for cake texture. Buttermilk’s acidity gently breaks down gluten, resulting in an incredibly tender crumb. Meanwhile, oil, being liquid at room temperature, contributes to a cake that stays moist for longer compared to butter-based cakes, ensuring every bite is succulent and delightful.
- Intensely Rich Chocolate Flavor: We elevate the chocolate experience by “blooming” the cocoa powder. This simple yet powerful technique involves whisking cocoa powder with very hot water, which dissolves the cocoa solids and releases their full, complex flavor potential. The result is a much deeper, more pronounced chocolate taste throughout the cake, far superior to un-bloomed cocoa.
- Decadent Chocolate Ganache Frosting: Unlike many frostings that rely on cocoa powder, our ganache is made with real unsweetened chocolate. This choice provides a significantly richer, more luxurious chocolate flavor and a silky-smooth, almost glaze-like consistency. It’s thick enough to cling beautifully to the cake’s contours yet fluid enough to roll elegantly down the sides, creating that signature bundt cake allure. For another rich chocolate treat with ganache, try our Cosmic Brownies!
- Achieving the Perfect Frosting Consistency: The secret to our perfectly textured ganache lies in using half and half instead of heavier cream. Half and half has a lower fat content and a thinner consistency, which allows the ganache to be a gorgeous glaze that drizzles effortlessly down the cake without running off completely. This ensures an even, luscious coating that enhances both the appearance and the taste.
Essential Ingredients for Your Bundt Cake Masterpiece
Each ingredient in this Chocolate Buttermilk Bundt Cake recipe plays a crucial role in achieving its signature moistness, richness, and perfect texture. Understanding their purpose can help you bake with confidence and achieve consistent, delicious results.

- Eggs + Extra Egg Yolk: The foundation of any great cake, eggs provide structure and moisture. The addition of an extra egg yolk contributes significant fat, which is key to a richer flavor and an even more tender, moist cake crumb. Ensure your eggs are at room temperature for better emulsification with other ingredients.
- Buttermilk: This star ingredient is vital for creating a remarkably tender cake. Its acidity reacts with the baking soda, aiding in the cake’s rise and softening the gluten in the flour. Beyond texture, buttermilk imparts a subtle tang that adds complexity and depth to the chocolate flavor, preventing the cake from being overly sweet.
- Vegetable Oil / Canola Oil: Opting for oil over solid fats like butter is crucial for superior moisture. Oil remains liquid at room temperature, keeping your cake moist and tender for days. It also contributes to a finer, more consistent crumb.
- Unsweetened Cocoa Powder (Natural Cocoa): This recipe calls for natural unsweetened cocoa powder. Its inherent acidity reacts with the baking soda (a base) to provide lift and create a light, airy texture. This interplay is also fundamental to “blooming” the cocoa for intensified flavor.
- Baking Soda: A powerful leavening agent, baking soda requires an acid (like that found in buttermilk and natural cocoa powder) to activate. When combined, they produce carbon dioxide bubbles that help the cake rise, resulting in a light and fluffy texture. Always check that your baking soda isn’t expired for optimal lift.
- Very Hot Water: This seemingly simple ingredient is essential for the “blooming” process. When hot water is added to cocoa powder, it unlocks and amplifies the cocoa’s flavor compounds, leading to a much richer, more profound chocolate taste that will truly shine in your bundt cake.

- Unsweetened Chocolate: For the ganache frosting, unsweetened chocolate provides a deep, authentic chocolate flavor that cocoa powder alone cannot match. Chopping it finely ensures it melts smoothly and evenly into the other ganache ingredients.
- Half and Half: This is a key ingredient for achieving the perfect glaze-like consistency for your ganache. Its lighter texture compared to heavy cream allows the frosting to beautifully cascade down the bundt cake’s intricate design, rather than being too thick and globby.
- Powdered Sugar (Confectioners’ Sugar): Crucial for a smooth, lump-free ganache frosting. Sifting the powdered sugar before adding it to the melted chocolate mixture is highly recommended to prevent any grittiness and ensure a perfectly silky finish.
Step-by-Step Guide to Baking Your Chocolate Buttermilk Bundt Cake
Follow these detailed steps to create a truly unforgettable Chocolate Buttermilk Bundt Cake, from batter to luscious ganache frosting.
- Prepare Your Pan and Preheat Oven: Begin by preheating your oven to 350°F (175°C). The preparation of your bundt pan is paramount to a successful cake release. Generously grease your 12-cup bundt pan with butter or shortening, ensuring every nook and cranny is coated. Then, dust it thoroughly with flour, tapping out any excess. For extra insurance, you can follow this with a quick spray of nonstick cooking spray that contains flour. Set the prepared pan aside.
- Combine the Wet Ingredients: In the bowl of a stand mixer fitted with a paddle attachment, combine the large eggs, extra egg yolk, room-temperature buttermilk, vegetable oil (or canola oil), and vanilla extract. Beat these ingredients on medium-low speed until they are thoroughly combined and the mixture appears uniform. This ensures a well-emulsified base for your cake batter.


- Incorporate the Dry Ingredients: To the wet ingredient mixture, add the all-purpose flour, unsweetened cocoa powder, granulated sugar, salt, and baking soda. Mix on low speed, just until the dry ingredients begin to combine with the wet. Be careful not to overmix at this stage; overmixing can lead to a tough cake.


- Bloom the Cocoa Powder with Hot Water: Once the dry ingredients are partially incorporated, slowly stream in the very hot water while the mixer is still running on low speed. The hot water will “bloom” the cocoa powder, intensifying its flavor. Continue mixing on low speed for just 1 additional minute after the hot water is fully combined, ensuring a smooth, uniform batter. Scrape down the sides of the bowl as needed.


- Bake the Bundt Cake: Carefully pour the rich chocolate batter into your meticulously prepared bundt pan. Transfer to the preheated oven and bake for 45-55 minutes. The cake is done when a wooden skewer or toothpick inserted into the center comes out clean or with a few moist crumbs attached. Avoid opening the oven door too frequently during baking.


Once baked, remove the cake from the oven and allow it to cool in the bundt pan for exactly 10 minutes. This crucial cooling time allows the cake to firm up slightly, making it easier to release. After 10 minutes, carefully invert the pan onto a wire rack to completely cool to room temperature. Resist the urge to rush this step; attempting to frost a warm cake will cause the ganache to melt and slide off.
- Prepare the Silky Chocolate Ganache Frosting: While the cake cools, prepare your irresistible chocolate ganache. In a microwave-safe bowl, combine the finely chopped unsweetened chocolate, unsalted butter, and half and half. Heat the mixture in 20-second increments, stirring vigorously after each interval, until the chocolate and butter are fully melted and the mixture is smooth. At first, it might appear slightly gritty, but don’t worry, it will smooth out.

Whisk the salt and vanilla extract into the melted chocolate mixture. Finally, gradually whisk in the sifted powdered sugar until the ganache is perfectly smooth and lump-free. Let the frosting sit for 1-5 minutes at room temperature. This brief resting period allows it to thicken slightly, achieving the ideal consistency for coating the cake without running off entirely.
- Frost Your Bundt Cake: Once the cake is completely cool and the ganache has rested to the perfect consistency, it’s time for the grand finale! Spoon the luscious chocolate ganache frosting over the top of the cooled chocolate bundt cake. Allow the frosting to naturally cascade and roll down the beautiful fluted sides of the cake, creating a stunning, even coating. Serve immediately and prepare for rave reviews!

Expert Baking Tips for Bundt Cake Perfection
Achieving a perfect bundt cake and a flawless ganache can be simple with a few insider tips:
- Bundt Pan Preparation is Key: A well-greased and floured bundt pan is your best friend. For ultimate non-stick insurance, liberally spray the pan with a nonstick cooking spray that contains flour. For an even more reliable release, first grease the pan thoroughly with butter or shortening, then dust it with flour, ensuring every crevice is coated. Finally, give it an extra spray with flour-containing cooking spray. This triple-layer approach minimizes the risk of your cake sticking.
- The Ganache’s “Gritty” Secret: Don’t be alarmed if, after melting the chocolate, butter, and half and half, your ganache mixture appears slightly gritty. This is a common occurrence before the powdered sugar is added. Rest assured, once you whisk in the sifted powdered sugar, the mixture will transform into a gloriously smooth, velvety ganache.
- Patience for Perfect Frosting: It is absolutely essential that your bundt cake has cooled completely to room temperature before you apply the ganache frosting. Additionally, allow the prepared chocolate ganache to sit for 1 to 5 minutes to thicken slightly. If you frost a warm cake or use ganache that is too thin, it will simply slide right off the sides, leaving you with a messy, uneven coating.
- Avoid the Overmixing Trap: When incorporating the dry ingredients into the wet mixture, mix on low speed only until just combined. Overmixing at this stage develops the gluten in the flour too much, leading to a tough, dense cake with a diminished rise. For a tender and airy cake, stop mixing as soon as no streaks of flour remain.
- Trust Your Oven (with a Thermometer!): Accurate oven temperature is vital for proper cake rise and even baking. Many ovens can be surprisingly inaccurate, reading hotter or cooler than the set temperature. Investing in an inexpensive oven thermometer can make a significant difference in your baking results, helping to ensure your cakes rise beautifully and bake perfectly every time. Also, always ensure your baking soda is fresh and not expired for optimal leavening.
If you’re looking for another divine chocolate bundt cake, our Chocolate Chip Bundt Cake, also topped with a smooth chocolate ganache, is a must-try!
Make Ahead, Storing, and Freezing Your Bundt Cake
Plan your dessert enjoyment with these helpful tips for making ahead, storing, and freezing your Chocolate Buttermilk Bundt Cake.
- Storing Your Cake: Due to the half and half in the ganache frosting, this chocolate bundt cake needs to be refrigerated. Store the cake, covered tightly with plastic wrap or in an airtight container, in the refrigerator for 3-5 days. Bringing it to room temperature for about 30 minutes before serving will enhance its flavor and moistness.
- The Ganache Make-Ahead Conundrum: While you can bake the bundt cake ahead of time, it is not recommended to make the chocolate ganache frosting significantly in advance. Once chilled, a ganache frosting can become quite firm. Attempting to reheat it or re-whisk it after chilling can sometimes cause the chocolate to seize or become gritty, losing its smooth, luscious texture. For the best results, bake the cake ahead of time and store it, then prepare the fresh chocolate ganache frosting on the day you plan to serve it.
- Freezing for Future Enjoyment: This chocolate buttermilk bundt cake freezes beautifully! For best results, allow the frosted cake to fully set, then flash freeze it in the freezer until solid (this prevents the frosting from smudging). Once solid, wrap the cake tightly in several layers of plastic wrap, followed by a layer of aluminum foil. Freeze for up to 2 months. To thaw, transfer the wrapped cake to the refrigerator overnight. Once thawed in the fridge, remove it, unwrap, and let it come to room temperature on the counter before serving.

Frequently Asked Questions About This Recipe
Here are answers to some common questions about making and enjoying this Chocolate Buttermilk Bundt Cake:
Absolutely! This cake is exceptionally moist thanks to a couple of key ingredients. Vegetable oil, which remains liquid at room temperature, contributes significantly to its moist texture. Additionally, the acidity in buttermilk works to tenderize the cake’s crumb by breaking down the gluten in the flour, resulting in a cake that is wonderfully soft and succulent.
The primary difference is the shape! A bundt cake is simply any cake baked in a distinctive bundt pan, which typically features a fluted or decorative design and a central tube. While the ingredients can often be similar to those of a regular round or sheet cake, the bundt pan provides a unique, elegant presentation. The central tube also allows for more even baking, especially for denser batters.
Preventing a bundt cake from sticking requires thorough preparation! My top recommendation is a generous three-step process: first, grease the pan completely with butter or shortening, ensuring all crevices are covered. Second, dust the entire greased surface with flour, tapping out any excess. Third, for extra insurance, spray the pan with a nonstick cooking spray that specifically contains flour. This combination creates a robust non-stick barrier, ensuring your beautifully shaped cake releases perfectly every time.
Yes, you can create a simple homemade buttermilk substitute. For every cup of buttermilk needed, measure 1 cup of regular milk (dairy or non-dairy) into a liquid measuring cup. Add 1 tablespoon of white vinegar or lemon juice to the milk. Stir gently and let it sit for 5-10 minutes until it slightly curdles. While this substitute works well in terms of acidity, it may not provide the exact same richness or texture as real buttermilk, but it’s a great alternative in a pinch.

More Decadent Chocolate Cake Recipes to Explore
If you can’t get enough of rich, chocolatey goodness, explore these other fantastic chocolate cake recipes from our collection:
- Classic Moist Chocolate Cake Recipe
- Chocolate Cake with Peanut Butter Frosting
- Fun and Delicious Chocolate Cake Pops
- Authentic German Chocolate Cake Recipe
- The Best Chocolate Cupcake Recipe
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Chocolate Buttermilk Bundt Cake
This chocolate Bundt Cake is incredibly moist and tender! We combine buttermilk for tenderness and a subtle tang, with vegetable oil for extra moisture. Towards the end of mixing the batter, hot water is streamed in to help the cocoa powder bloom, truly brightening the chocolate flavor. The crowning glory of this cake is its heavenly, smooth ganache frosting!
Cook Time: 45 mins
Total Time: 1 hr 5 mins
Average Rating: 4.74 from 45 votes
Ingredients
Cake
- 2 large eggs
- 1 egg yolk
- 1 ⅓ cups buttermilk – at room temperature
- 1 cup + 2 tablespoons vegetable oil – or canola oil
- 1 tablespoon vanilla extract
- 2 ½ cups + 2 tablespoons all purpose flour
- ¾ cup unsweetened cocoa powder
- 2 ¼ cups granulated sugar
- 1 teaspoon salt
- 2 ½ teaspoon baking soda
- 1 ⅓ cup very hot water
Chocolate Frosting/Glaze
- 6 oz unsweetened chocolate – finely chopped
- ½ cup unsalted butter – if using salted butter, omit the salt in the frosting
- ½ cup half and half
- ¼ teaspoon salt
- 1 ½ teaspoons vanilla extract
- 4 cups powdered sugar – measured then sifted
Instructions
Chocolate Bundt Cake
- Preheat oven to 350°F (175°C). Grease, flour, and then generously spray a 12-cup bundt pan with nonstick cooking spray that contains flour. Set aside.
- In the bowl of a stand mixer fitted with a paddle attachment, mix the eggs, egg yolk, buttermilk, vegetable oil, and vanilla until combined.
- Add the flour, cocoa powder, sugar, salt, and baking soda and mix on low speed. Once the dry ingredients are starting to combine with the wet ingredients, slowly stream in the hot water. Once the hot water has combined, continue mixing on low speed for 1 additional minute.
- Pour the cake batter into the prepped bundt pan and bake for 45-55 minutes or until a toothpick inserted in the center comes out clean. Remove from the oven and let cool for 10 minutes in the pan, then invert onto a wire rack to cool completely to room temperature.
Chocolate Frosting/Glaze
- Combine finely chopped chocolate, butter, and half and half in a microwave-safe bowl. Heat in 20-second increments (stirring very well in between) until the chocolate and butter are completely melted. At this stage, the mixture may appear slightly gritty, but don’t worry, it will smooth out when you add the powdered sugar.
- Whisk the salt and vanilla into the melted chocolate mixture. Lastly, whisk in the sifted powdered sugar until smooth. Let the frosting sit for 1-5 minutes to thicken slightly. If you frost the cake right away, the frosting will likely slide off the sides of the cake.
Notes
Make sure to spray the bundt pan liberally with nonstick spray that contains flour in it! Or better yet, grease and flour with butter or shortening and THEN spray the pan too.
For the frosting, after you’ve melted the chocolate, butter, and half and half, the mixture will appear slightly gritty. Don’t worry, it will smooth out when you add the powdered sugar!
Make sure the cake has cooled to room temperature and the chocolate glaze frosting has sat for up to 5 minutes. If you were to frost the cake right away, the frosting would slide down the sides of the cake.
Don’t overmix the cake when you add the dry ingredients to the wet.
Make Ahead, Storing, and Freezing:
Store the chocolate bundt cake with buttermilk covered in the fridge for 3-5 days. It needs to be refrigerated because of the half and half in the frosting.
Once chilled, the frosting shouldn’t be reheated. Since it’s a ganache frosting, reheating it or cooling it down (by chilling it in the fridge) then stirring or whisking it could cause the chocolate to go gritty again in the frosting. Because of this, I recommend making the cake ahead of time, but then making the chocolate ganache frosting the day of serving.
Flash freeze the frosted cake in the freezer until solid, then wrap in plastic wrap and aluminum foil and freeze for up to 2 months. Let thaw in the fridge overnight, then remove, uncover, and continue thawing at room temperature.
Nutrition Information
Carbohydrates: 107g (36%)
Protein: 8g (16%)
Fat: 19g (29%)
Saturated Fat: 12g (60%)
Polyunsaturated Fat: 1g
Monounsaturated Fat: 6g
Trans Fat: 1g
Cholesterol: 74mg (25%)
Sodium: 522mg (22%)
Potassium: 296mg (8%)
Fiber: 5g (20%)
Sugar: 78g (87%)
Vitamin A: 383IU (8%)
Vitamin C: 1mg (1%)
Calcium: 76mg (8%)
Iron: 5mg (28%)
Cuisine: American
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