Ingredients

2 cups all-purpose flour
2 cups sugar
1 teaspoon soda
2 sticks butter
4 tablespoons cocoa
1 cup water
1/2 cup buttermilk
2 eggs, beaten with a fork
1 teaspoon vanilla
1/2 cup peanut butter

Preheat oven to 350 degrees. Combine flour, sugar and soda in a large bowl. Bring butter, cocoa, water and buttermilk to a boil in a saucepan. Pour mixture over dry ingredients and mix well. Add eggs and vanilla. Pour into greased and floured 9-by-14-by-1 1/2-inch pan. Bake for 25 minutes (or until cake loosens from pan and toothpick comes out clean).
Spread a thin layer of peanut butter (crunchy or creamy) over warm (not hot) cake. (You may not need full 1/2 cup.) Frost with Fudge Frosting when cool.

Fudge Frosting:
1 stick butter
4 tablespoons cocoa
6 tablespoons buttermilk
1-pound box powdered sugar
1 teaspoon vanilla

Directions

Bring butter, cocoa and buttermilk to a boil in a saucepan. Pour over powdered sugar and mix well. Add vanilla and mix. Pour over cake. Serves 15.