2 cans (4 ounces each) mushroom stems and pieces, drained
1/4 teaspoon salt
1/4 teaspoon pepper
8 ounces process American cheese, cubed, divided
Cook rice according to package directions; set aside. In a large skillet, cook sausage and onion until sausage is no longer pink and onion is tender; drain. Stir in zucchini, tomato, mushrooms, salt, pepper, 6 oz. of cheese and rice. Spoon into a greased 11x7-in. baking dish.
Bake, uncovered, at 325° for 50-60 minutes, stirring every 20 minutes, or until vegetables are tender. Top with remaining cheese; return to the oven until cheese melts.