You can smash up 4 Heath bars for the toffee bits.
If you are taking this somewhere, don't cut the apples until you get there. Better yet, bring along a small cutting board and apple slicer that you can keep right there with the dip. Slice a few at a time to keep the apples from browning. If you are like me, any tiny bit of lemon juice may help the browning, but just kills all flavor...bleh!