Dessert for adults stuck with kid-palates; modified from the recipe below.
What You'll Need
Yellow Cake Mix
Semi-sweet chocolate chips (1 pkg)
Heath or Skor bars, coarsely chopped
Can sweetened condensed milk
Toffee pieces (optional)
Heat oven to 350 degrees. Grease 13x9" pan.
In large bowl, combine cake mix with oil and eggs; blend well. Add in chocolate chips, chopped Heath bars, and additional toffee pieces (optional). Press 1/2 of this mixture into the pan. Bake for 10 minutes.
In medium saucepan, combine butter, caramels, and condensed milk. Stir constantly and cook over med-low heat until mixture is smooth. Pour caramel mix evenly over the pre-baked layer 1. Top with the remaining cake mixture, attempting to cover the entire carmel layer.
Bake for another 25-30 minutes or until the top is set and golden brown. Cool for 20 minutes then run a knife around the edges of the pan. Cool another 40 minutes. Refrigerate for 1 hour.