Philly Steak Pizza

1 12-inch pizza crust
1/2 pound roast beef, cooked and chopped
1/3 cup green bell pepper, cut into strips and sautéed
1/3 cup onion, sliced and sautéed
2 cups Mozzarella, grated

Preheat oven to 400. Top the crust with beef, peppers, onions and cheese. Bake for 7-9 minutes or until cheese begins to brown. Serve warm. Yield - 4 servings