Casserole Italiano - Diet Recipe

Ingredients

• 1/2 cup chopped onion
• 1/2 cup chopped green bell pepper
• 1 1/2 lbs. lean ground sirloin
• 1 1/2 tsp. salt
• 1/4 tsp. pepper
• 1/2 tsp. oregano
• 2 Tbs. Worcestershire sauce
• 8oz. package uncooked elbow macaroni
• 1 3oz. can button mushrooms, drained
• 1 8.75oz. can tomato soup, undiluted
• 1 medium tomato, chopped
• 1/2 cup grated fat-free Parmesan cheese