Pour stuffing mix into cast iron skillet or oven safe casserole dish which is at least 13 x 9 inches.
Add boiling water and butter cut in slices. Stir until butter melts.
Add creamed corn, whole sweet corn and diced onions to mixture. Stir well.
Stir in half & half, garlic salt, ground cumin and sugar. Mix together and add beaten eggs. Stir well.
Bake casserole in 350 degree oven for 45 minutes until golden brown.
Notes
Serve corn casserole directly from a cast iron skillet or oven safe dish.
Refrigerate leftovers in an airtight container for up to 3 days.
Reheat in the microwave or in a 350 degree oven until heated throughout.
Sweet corn casserole can be frozen for up to 3 months in the freezer if stored in an airtight container or vacuum sealed bag. Thaw in the refrigerator overnight and reheat in the oven or microwave.