Instructions: In a mixing bowl, cream peanut butter, butter and sugar. Add eggs; mix well. Combine flour, baking powder and salt; add alternately with milk to creamed mixture. Mix well. Pour into a greased 9-inch square baking pan.

Bake at 350 for 30-35 minutes or until a toothpick inserted near the center comes out clean. Cool on a wire rack. For frosting, cream peanut butter and butter. Add sugar, milk and vanilla; mix until smooth. Frost cake.

If you would like to email yourself the recipe for later use, or share the recipe with your friends or family, enter the email addresses below and this recipe will be emailed to you and others as well.