Can't Leave Alone Bars

These are very similar to the Revel Bars Jenn posted. The main difference is that this recipe uses a boxed cake mix for the crust. They are really good and the chocolate is so gooey.

Ingredients:
1 package (18-1/4 oz. size) white cake mix (use chocolate if you're a chocoholic)
2 eggs
1/3 cup vegetable oil
1 can (14-oz. size) sweetened condensed milk
1 cup semisweet chocolate chips
2 T. cup butter, cubed
1 t. vanilla

In a bowl, combine the dry cake mix, eggs and oil. With floured hands, press 2/3 of the mixture into a greased 13x9x2-inch baking pan. Set remaining cake mixture aside. In a microwave-safe bowl, combine the milk, chocolate chips and butter.

Microwave, uncovered, on HIGH for 45 seconds; stir. Microwave 45-60 seconds longer or until chips and butter are melted; stir until smooth. Add vanilla. Pour over crust.

Crumble remaining cake mixture over top. Bake at 350F for 20-25 minutes or until lightly browned. Cool before cutting.