1 c. peanut butter
2/3 c. butter
1 c. packed brown sugar
2 c. sugar
4 eggs
2 c. flour (all-purpose)
1/2 tsp. salt
2 tsp. baking powder
12 oz. chocolate chips
1 tsp. vanilla

Beat peanut butter and butter until blended. Gradually add sugars and beat until fluffy. Add eggs, one at a time. Add dry ingredients and mix. Stir in chocolate chips and vanilla. Spread in buttered 9 x 13 pan.

Bake in 350°F oven for 30 to 35 minutes until slightly brown.