Moist Buttermilk Chocolate Cake Recipe for Perfect Layer Cakes

If you love chocolate cake, this buttermilk version deserves a spot in your repertoire. It delivers a tender, almost fudgy crumb while staying light enough for daily dessert. Highlights:

• Rich, moist texture: Buttermilk and the combination of butter and oil keep the cake tender and deeply chocolatey, while the frosting adds a smooth glossy finish.
• Simple, pantry-friendly ingredients: Flour, cocoa powder, sugar, eggs, butter, oil and buttermilk are all you need, and the batter comes together in one bowl with a whisk.

This cake is straightforward: mix the dry and wet ingredients, pour into a prepared pan, and bake.

Buttermilk Chocolate Cake

Dry: All-purpose flour, unsweetened cocoa powder, baking powder, baking soda, and salt.

Wet: Canola oil, melted butter, granulated sugar, eggs, buttermilk, and hot water (or hot coffee for deeper flavor).

Buttermilk Chocolate Frosting

Unsalted butter, unsweetened cocoa powder, buttermilk, vanilla extract and sifted powdered sugar make a glossy, spreadable frosting.

If you need to adapt the recipe:

• Cocoa powder: Use unsweetened cocoa for best flavor.
• Oil: Any neutral-flavored baking oil (canola, vegetable) works.
• Melted butter: Salted butter is fine—omit added salt. Vegan/dairy-free butter or extra oil can be used if needed.
• Sugar & Eggs: The recipe hasn’t been tested with alternative sweeteners or egg replacements.
• Buttermilk: Essential for texture and tang. Make a substitute by adding 1 tablespoon lemon juice or white vinegar to milk to equal 1 cup; let sit 10–15 minutes.
• Warm water: Replace with equal parts hot coffee for a richer chocolate flavor.

Layer cake: To make a two-layer cake, divide batter between two 8‑ or 9‑inch pans and bake 25–35 minutes. Chill layers before frosting. The buttermilk frosting is more glaze-like, so choose a thicker chocolate frosting if you need a spreadable filling between layers.

Smaller single layer: Halve the recipe for an 8‑ or 9‑inch single layer and bake 25–30 minutes, until a toothpick comes out with a few moist crumbs.

The cake comes together in about 10 minutes of prep and about 30 minutes of bake time. Follow these easy steps:

1. Preheat the oven to 350°F (177°C). Lightly grease and line the bottom and long sides of a 9 x 13‑inch pan with parchment paper. In a large bowl, whisk together flour, cocoa powder, sugar, baking soda, baking powder and salt.
2. Whisk in oil, melted butter, eggs and buttermilk until smooth. Carefully whisk in the hot water (or coffee) until combined; the batter will be thin.
3. Pour batter into the prepared pan and bake 30–35 minutes, or until a toothpick comes out with a few moist crumbs.
4. Cool the cake in the pan for 15–20 minutes, then lift it out using the parchment and finish cooling on a rack. While the cake cools, prepare the frosting.
5. For the frosting: melt butter over low heat, whisk in cocoa and cook about 1 minute to bloom the cocoa. Remove from heat and whisk in buttermilk, sifted powdered sugar and vanilla until smooth.
6. Return the cooled cake to the pan or a serving plate, pour and spread the frosting over the cake, allow it to set, then slice and serve.

• Store: Keep the frosted cake in an airtight container at room temperature for 3–4 days, or refrigerate for up to one week.
• Freeze: Wrap an unfrosted, cooled cake tightly and freeze up to 2 months. Thaw at room temperature for a few hours or overnight in the fridge before frosting.
• Serve: This cake is lovely with cold milk or a scoop of vanilla ice cream.

• Use full‑fat buttermilk for richness and moisture; it adds a pleasant tang that enhances the chocolate.
• Bring cold ingredients to room temperature so they combine smoothly and yield a softer crumb.
• Don’t overbake: Start checking early in the bake range. The center should yield a few moist crumbs on a toothpick and the edges should slightly pull from the pan.
• Sift powdered sugar: Sifting prevents lumps in the frosting and helps it become silky and smooth.

Buttermilk tenderizes baked goods and keeps them moist, helps with rise, and contributes a subtle tang that balances sweetness and enriches flavor.

Cakes made with buttermilk can be stored at room temperature for several days. If the frosting contains perishable ingredients like cream cheese or whipped cream, refrigerate.

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If you try this Buttermilk Chocolate Cake, please rate the recipe and leave a comment. Tag @olivesnthyme on Instagram so others can see your bake.

Buttermilk Chocolate Cake

Megan