Double Peanut Butter Cake

Ingredients 

• 1/2 cup creamy peanut butter
• 1/4 cup butter or margarine, softened
• 3/4 cup sugar
• 2 eggs
• 1-1/2 all purpose flour
• 2 teaspoons baking powder
• 1/4 teaspoon salt
• 3/4 cup milk

Frosting:

• 1/3 cup chunky peanut butter
• 3 tablespoons butter or margarine softened
• 3 cups confectioners sugar
• 1/4 milk
• 1-1/2 teaspoons vanilla extract

Method 

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 greased 9 inch square baking pan. Bake at 350°F for 30-35 minutes. 
For Frosting:  Cream peanut butter and butter.  Add sugar, milk and vanilla; mix until smooth.