1 1/4 c. peanut butter
3/4 c. butter
5 eggs
2 tsp. vanilla
2 1/2 c. flour
2 1/2 tsp. baking powder
1/8 tsp. salt
1 2/3 c. brown sugar
1 2/3 c. sugar

Combine peanut butter and butter. Beat until creamy. Add eggs and vanilla. Combine flour, baking powder, salt, and sugars. Combine all together. Spread with 1 2/3 cups chocolate chips. Bake at 350 degrees until chips melt. Run knife through to marbelize. Return to oven and bake for another 30 minutes.