Ingredients
- 1 and 3/4 cups all-purpose flour
- 1 and 1/2 cups granulated sugar
- 3/4 cup unsweetened cocoa powder
- 1 and 1/2 teaspoons baking powder
- 1 and 1/2 teaspoons baking soda
- 1 teaspoon salt
- 2 large eggs
- 1 cup whole milk
- 1/2 cup vegetable oil
- 2 teaspoons vanilla extract
- 1 cup boiling water
For the Peanut Butter Frosting:
- 1 cup creamy peanut butter
- 1/2 cup unsalted butter, softened
- 2 cups powdered sugar
- 1/3 cup heavy cream (more if needed)
- Pinch of salt
For the Chocolate Ganache (optional):
- 1/2 cup semi-sweet chocolate chips
- 1/4 cup heavy cream
Instructions
- Preheat oven to 350°F (175°C). Grease and flour two 8-inch round cake pans.
- In a large bowl, whisk together the flour, sugar, cocoa powder, baking powder, baking soda, and salt.
- Add eggs, milk, oil, and vanilla to the dry ingredients. Beat on medium speed for 2 minutes. Stir in boiling water — the batter will be thin.
- Divide batter evenly between the prepared pans. Bake for 30–35 minutes, or until a toothpick inserted into the center comes out clean.
- Let cakes cool in pans for 10 minutes, then transfer to a wire rack to cool completely.
- Make the Peanut Butter Frosting: Beat peanut butter and softened butter together until smooth. Gradually add powdered sugar and beat until fluffy. Add heavy cream, one tablespoon at a time, until the frosting is creamy and spreadable. Add a pinch of salt to balance the sweetness.
- Place one cake layer on a serving plate. Spread frosting evenly over the top. Place the second cake layer on top and frost the top and sides.
- Optional Ganache: Warm the heavy cream in a small saucepan or microwave until steaming. Pour over the chocolate chips and let sit for 2 minutes. Stir until smooth. Drizzle the ganache over the frosted cake for an extra chocolate touch!
- Chill for 30 minutes to set. Slice and enjoy!
If you’d like, I can help adapt this for cupcakes, a sheet cake, or a no-bake version too — just ask!