1/2 c. crunchy peanut butter
1/3 c. butter
3/4 c. packed brown sugar
3/4 c. granulated sugar
2 eggs
2 tsp. vanilla
1 c. flour
1 tsp. baking powder
1/4 tsp. salt

Cream butter and peanut butter. Add sugar and brown sugar, mixing well. Add eggs and beat until fluffy. Combine flour, baking powder and salt. Mix dry ingredients and vanilla with creamed mixture. Spread batter evenly in greased and floured 9x12 inch baking dish. Bake at 350 degrees until a toothpick inserted in center comes out clean. Cut when cool.