Here's a really good recipe I got off the side of a box of Duncan Hines yellow cake mix:
Pecan Toffee Bars
1 package yellow cake
1 egg
Mix together and bake 6-7 minutes
1 can sweetened condensed milk
1 egg
Mix together and pour over cake. Sprinkle on toffee chips and pecans. Bake 18 minutes.
I hate pecans, so I leave them out---it's way yummy!!!