2 1/2 c. all purpose flour
1 1/2 tsp. baking soda
1 tsp. baking powder
1/4 tsp. salt
1 c. peanut butter
1 c. firmly packed brown sugar
1 c. granulated sugar
2 eggs
1 tsp. vanilla extract
1 (12 oz.) pkg. semi-sweet chocolate chips
1 c. butter

Preheat oven to 375 degrees. In medium bowl combine flour, baking soda, baking powder and salt. In mixer bowl cream butter, peanut butter, brown sugar and granulated sugar until light and fluffy. Beat in eggs and vanilla. Gradually beat in dry ingredients just until combined. Fold in chocolate chips. Drop by heaping teaspoon onto ungreased cookie sheet. Bake 8-10 minutes until golden.