1 pkg. white or yellow cake mix
2 eggs
1/3 cup vegetable oil
1 can sweetened condensed milk
1 cup semi-sweet chocolate chips
1/4 cup butter, cubed
Combine dry cake mix, eggs & oil in bowl; press 2/3 into greased pan
In a microwavable bowl, combine milk, chocolate chips & butter; microwave until melted
Pour chocolate mixture over crust
Drop tsp. of remaining cake mixture over top
Bake at 350 for 20-25 min. until lightly browned on top
