1 (18.5 oz.) yellow or white cake mix
1/2 c. butter, melted
1 c. peanut butter
1 egg
1 can sweetened condensed milk
2 tbsp. butter
1 c. chocolate chips

Mix together the cake mix, butter, peanut butter and egg. Press 2/3 of this mixture into a greased 9 x 13 inch pan. Melt over low heat the condensed milk, 2 tablespoons of butter and chocolate chips. Pour over mix, then spoon remainder of peanut butter mixture randomly over chocolate.

Bake for 25 minutes at 350°F.