Meet Your Chocolate Peanut Butter Cake

This is a rich, moist chocolate cake layered with creamy peanut butter frosting and finished with a glossy chocolate ganache. It feels fancy but is easy to make. If you like other peanut butter-chocolate treats, check this fun twist: chocolate peanut butter cake roulade.

Why This Cake Will Win Hearts

It blends two favorite flavors—chocolate and peanut butter—so it pleases kids and adults. The cake stays soft, the filling is smooth, and the ganache adds a shiny finish. If you want a quick, chocolate-peanut treat idea to compare, take a look at this easy peanut butter cup dump cake for inspiration.

How to Make Chocolate Peanut Butter Cake

Follow the simple steps below. Read everything before you start, and have your pans ready.

What You’ll Need (Ingredients)

• 2 cups flour (250g)
• 3⁄4 cup cocoa powder (75g)
• 1⁄2 teaspoon baking powder
• 1 1⁄2 teaspoons baking soda
• 1⁄2 teaspoon salt
• 1 3⁄4 cups sugar (350g)
• 2 large eggs
• 1 cup buttermilk (or milk + 1 teaspoon vinegar)
• 1/2 cup vegetable oil (120ml)
• 2 teaspoons vanilla extract
• 1 cup hot water or coffee (240ml)

For the peanut butter frosting:

• 1 cup peanut butter (250g)
• 1/2 cup butter (at room temperature)
• 2 cups powdered sugar (250g)
• 1/4 cup cream or milk (60ml)
• 1 teaspoon vanilla extract

For the chocolate ganache:

• 150g milk or dark chocolate
• 1/2 cup cream (120ml)

Step-by-Step Baking Directions

1. Preheat the oven to 170°C. Grease your cake pans and line them with paper. In a large bowl, whisk together the flour, cocoa, baking powder, baking soda, and salt. In another bowl, whisk the sugar, eggs, buttermilk, oil, and vanilla until smooth. Add the dry mix to the wet mix, then stir in the hot water or coffee. The batter will be thin. Pour into your pans and bake for 30–35 minutes, or until a toothpick comes out clean. Let the cakes cool completely.
2. For the peanut butter frosting: Beat the butter and peanut butter until creamy. Add the powdered sugar, then pour in the cream and vanilla. Beat until the frosting is soft and spreadable.
3. Make the ganache: Heat the cream until it just begins to simmer. Pour it over the chopped chocolate. Let sit for 1–2 minutes, then stir until smooth and glossy.
4. Assemble the cake: Place one cake layer on a plate. Spread some peanut butter frosting over it. Add the next cake layer and spread frosting on the top and sides. Pour the ganache over the top, letting it drip down the sides. Smooth as you like.

How to Plate and Serve It

Slice the cake with a sharp knife warmed under hot water for clean cuts. Serve at room temperature so the frosting is soft. Add a few roasted peanuts or a light dusting of cocoa on top for a nice look. For more serving ideas and no-bake alternatives, see this no-bake chocolate peanut butter treat.

How to Store the Cake

• Room temperature: Store covered for up to 1 day if your kitchen is cool and not humid.
• Refrigerator: Keep in an airtight container for 3–4 days. Let slices come to room temperature before serving for best texture.
• Freezer: Wrap slices tightly and freeze up to 2 months. Thaw overnight in the fridge.

Simple Tips to Make It Better

• Use hot coffee instead of water to boost the chocolate flavor.
• Let the cakes cool fully before frosting to avoid melting the filling.
• If your frosting is too thick, add a teaspoon of cream at a time until it spreads easily.
• For even layers, level the cakes with a knife or cake leveler.
  Also, if you want a super simple peanut butter cup cake idea, this one-bowl peanut butter cup dump cake shows an easy route.

Small Changes You Can Try

• Swap crunchy peanut butter for smooth to add texture.
• Use dark chocolate ganache for a less sweet finish.
• Add a layer of sliced bananas or chocolate chips between layers.

Nutrition Snapshot (Estimate)

Per slice (assuming 12 slices): about 520–650 calories, 9–12g protein, 28–36g fat, 60–75g carbs. Exact numbers depend on brands and portion size.

Family-Friendly Serving Ideas

• Serve with cold milk for kids.
• Add a scoop of vanilla ice cream for a party dessert.
• Cut into small squares for snack-size portions.

What Goes Well with This Cake

• Coffee or strong milk to balance the sweetness.
• A light fruit salad or berries to add freshness.
• Vanilla or salted caramel ice cream on the side.

Frequently Asked Questions

Q: Can I make this cake gluten-free?
A: Yes. Use a 1-to-1 gluten-free flour blend and check that your cocoa and other ingredients are gluten-free.

Q: Can I use regular milk instead of buttermilk?
A: Yes. Add 1 teaspoon vinegar to 1 cup milk and let sit for 5 minutes to make a buttermilk substitute.

Q: How do I fix a runny frosting?
A: Chill it for 10–15 minutes, then beat again. If still thin, add a little more powdered sugar.

Q: Can I make the cake ahead?
A: You can bake the layers a day ahead and wrap them tightly. Make the frosting and ganache the day you assemble.

Conclusion

If you want more recipe ideas and variations from trusted food bloggers, check these resources: Chocolate Peanut Butter Cake (Recipe + Video) – Sally’s Baking, Chocolate Peanut Butter Cake – Tastes Better From Scratch, and Chocolate Peanut Butter Cake for a crowd – RecipeTin Eats. These pages offer extra tips, videos, and different takes to help you perfect your cake.

Chocolate Peanut Butter Cake

This rich and moist chocolate cake layered with creamy peanut butter frosting and topped with glossy chocolate ganache is simple to make yet impressive.

Print Recipe Pin Recipe

Prep Time 25 minutes mins

Cook Time 35 minutes mins

Total Time 1 hour hr

Course Cake, Dessert

Cuisine American

Servings 12 slices

Calories 585 kcal

Ingredients

  

Main Ingredients

• 2 cups flour (250g)
• 3/4 cup cocoa powder (75g)
• 1/2 teaspoon baking powder
• 1 1/2 teaspoons baking soda
• 1/2 teaspoon salt
• 1 3/4 cups sugar (350g)
• 2 large eggs
• 1 cup buttermilk (or milk + 1 teaspoon vinegar)
• 1/2 cup vegetable oil (120ml)
• 2 teaspoons vanilla extract
• 1 cup hot water or coffee (240ml)

Peanut Butter Frosting

• 1 cup peanut butter (250g)
• 1/2 cup butter (at room temperature)
• 2 cups powdered sugar (250g)
• 1/4 cup cream or milk (60ml)
• 1 teaspoon vanilla extract

Chocolate Ganache

• 150 grams milk or dark chocolate
• 1/2 cup cream (120ml)

Instructions

 

Baking the Cake

• Preheat the oven to 170°C (340°F). Grease your cake pans and line them with paper.
• In a large bowl, whisk together the flour, cocoa, baking powder, baking soda, and salt.
• In another bowl, whisk the sugar, eggs, buttermilk, oil, and vanilla until smooth.
• Add the dry mix to the wet mix, then stir in the hot water or coffee. The batter will be thin.
• Pour into your pans and bake for 30–35 minutes, or until a toothpick comes out clean. Let the cakes cool completely.

Making the Frosting

• Beat the butter and peanut butter until creamy.
• Add the powdered sugar, then pour in the cream and vanilla. Beat until the frosting is soft and spreadable.

Making the Ganache

• Heat the cream until it just begins to simmer. Pour it over the chopped chocolate.
• Let sit for 1–2 minutes, then stir until smooth and glossy.

Assembling the Cake

• Place one cake layer on a plate. Spread some peanut butter frosting over it.
• Add the next cake layer and spread frosting on the top and sides.
• Pour the ganache over the top, letting it drip down the sides. Smooth as you like.

Notes

Slice the cake with a sharp knife warmed under hot water for clean cuts. Serve at room temperature. Add roasted peanuts or cocoa dusting for garnish.

Keyword Baking, Chocolate Cake, Chocolate Peanut Butter Cake, Dessert Recipe, Peanut Butter Frosting