2 to 3 med. zucchini
2 to 3 med. yellow summer squash
2 to 3 med. onions, peeled & quartered
1/2 lb. fresh mushrooms, sliced
2 lg. stalks celery, cut in 2 inch lengths
Salt & pepper to taste
Butter
1 (8 oz.) can tomato sauce or 2 med. fresh tomatoes, quartered
Mild Italian cheese, grated

Slice squash into 1/2 inch thick slices. Place in casserole in alternate layers with onions, mushrooms and celery. Add salt and pepper, dot with butter. Add tomato sauce over all. Sprinkle with grated cheese. Bake, covered, at 350 degrees for 1 1/2 hours.