2 eggs
1/2 c. water
1/4 c. butter (softened)
1 c. crunchy peanut butter
1 pkg. yellow cake mix (no pudding mix)
1 (12 oz.) pkg. chocolate chips

Grease and flour jelly roll pan (15 1/2 x 10 1/2 x 1 inch). Beat eggs, water, butter, peanut butter, and half of dry cake mix until smooth. Stir in remaining cake mix and chocolate pieces. Spread in pan. Bake 20 minutes at 350 degrees. Cool and cut into bars.