2 c. Bisquick
1 1/2 c. brown sugar, packed
3 eggs
1 tsp. vanilla
2/3 c. peanut butter
1 1/2 c. semi-sweet chocolate chips

Preheat oven to 350 degrees. Grease and flour a 9x13 pan. Combine all ingredients and spread in pan. Bake 30-35 minutes, until wooden pick inserted in center comes out clean. Cool; cut into bars.