Cook your favorite kind of sausage. Build your casserole by layering ingredients: start with sauce, then add sliced onions, mushrooms, more sauce, cheese, pepperoni, and the cooked sausage. Finish with Grillheads OMG seasoning. If desired, add black olives to half of the casserole. Bake on the grill or in the oven at 375°F for about 30 minutes until bubbly and heated through. Enjoy!
