4 c. zucchini, sliced
1 pt. fresh mushrooms, sliced
2 stalks celery, sliced
1 med. onion, diced
4 tbsp. butter
1/2 tsp. salt
2 tomatoes

Add first 5 ingredients; cover and simmer 10 minutes. Add salt and tomatoes (cut into 1/2 inch slices and cook 1 to 2 minutes). Sprinkle with Parmesan cheese.