I remember my ex-boss, Angela, bringing this cake to a team meeting when I worked at a local library and it was seriously fabulous! I have made this cake ever since and it is based off of a recipe from Food Network Star Katie Lee and her debut cookbook. Wonderful!
Chocolate Peanut Butter Cake
2 sticks unsalted butter
1 cup buttermilk
1/2 cup unsweetened cocoa powder
2 cups white all-purpose flour
2 cups white granulated sugar
1 teaspoon baking soda
1/2 teaspoon salt
3 large eggs, beaten
1 teaspoon pure vanilla extract
18 oz smooth peanut butter
Start by preheating your oven to 350 degrees F. Spray a 9×13-inch baking pan with non-stick spray containing flour.
In a large saucepan over medium heat combine the unsalted butter, buttermilk, unsweetened cocoa powder and 1 cup water. Stir constantly until bubbly. Once bubbling slightly remove from heat.
In a large bowl whisk together the white all-purpose flour, white granulated sugar, baking soda and salt. Beat in the large eggs and pure vanilla extract.
Slowly beat in the chocolate mixture and beat until smooth and combined.
Pour the batter into the prepared pan and smooth out the top. Bake in preheated oven for 20 minutes.
Once baked, remove and while the cake is still hot, spoon the smooth peanut butter all over the top, spreading evenly. Allow the cake to sit for a couple of hours to cool and the peanut butter to harden slightly.
When ready to frost the cake combine 1 stick unsalted butter with 1/4 cup unsweetened cocoa powder and 6 tablespoons buttermilk in a large saucepan over medium heat. Stir until bubbly. Once bubbly remove from heat and add 16 oz powdered sugar. Stir quickly together. Pour evenly over the top of the cake and spread evenly.
Allow to sit for an hour before cutting.