1/2 c. peanut butter
1/3 c. butter
1 c. sugar
1/4 c. brown sugar
2 eggs
1 c. flour
1 tsp. baking powder
1/4 tsp. salt
1 pkg. (6 oz.) chocolate pieces
1/2 tsp. vanilla extract

Beat first 2 ingredients until blended. Add sugars and beat until fluffy. Add eggs, beating well. Add dry ingredients and mix well.

Stir in chocolate pieces and vanilla and spread in buttered 9 inch square pan. Bake in preheated oven (350 degrees F.) 30-35 minutes. Cool. Cut into 2 inch squares. Makes about 16.