2 eggs
1 c. sugar
1/2 c. light brown sugar
1/4 c. peanut butter
1 tsp. vanilla
2 tbsp. soft butter
1 1/3 c. flour
2 tsp. baking powder
1/2 tsp. salt

Preheat oven to 350 degrees. Butter 9 inch square pan. Put the eggs, both sugars, peanut butter, vanilla and butter in a bowl and beat well with electric or rotary beater. Mix flour, baking powder and salt together and stir into first mixture. Spread in pan. Bake for about 25 minutes. Cool in pan 10-15 minutes. Cut into squares. Keep in airtight container or they will dry out quickly. For variation add chocolate frosting.