Family Tested & Approved
Mix first 5 ingredients (and set aside 1 cup of mixture).
Dissolve buttermilk with soda.
Combine mix, buttermilk and egg.
Add mixture to greased 9 x13 pan or 11x7 floured cake pan
Chop 3 toffee bars, add nuts, add to set mixture and sprinkle over top of mixture and bake 350 for 30-40 minutes.