Heat oven to 450 degrees or grill on medium. Spread sauce onto crust. Add 1 cup of cheese. Add onion, mushrooms and pepper. Add remaining cheese.
Place pizza in the oven (on center rack) or on the grill for 8-10 minutes, long enough to melt the cheese. Remove from oven. Add tomato and olives. Slice and serve.
Grilling Instructions
Place pizza in grill with lid closed for 5-7 minutes on pizza stone or using indirect heat, until toppings are warmed and crust is golden brown.