2 eggs
1/3 c. water
1/4 c. butter, softened
1 c. peanut butter
1 pkg. yellow cake mix
1 (12 oz.) semi-sweet chocolate pieces

Heat oven to 375 degrees. Beat eggs, water, butter and half of dry cake mix until smooth. Beat in remaining cake mix and peanut butter. Stir in chocolate chips. Spread dough n greased and floured pan 13 x 9 inch. Bake 20 minutes, cool cut into bars.