I love Fudge Bars and simple. This recipe combines the best of both worlds.
1 package yellow or white cake mix
1/3 cup oil
1 (14 oz.) can sweetened condensed milk
1 Cup semi-sweet chocolate chips
1/4 cup butter
Combine cake mix, eggs and oil. Press 2/3 mix into a 13 x 9 greased pan.
Bake at 350 degrees for 20-25 minutes until lightly browned. Cool before cutting.