Zucchini Casserole
["4 to 6 medium zucchini, sliced", "4 to 5 medium tomatoes, sliced", "1 large Spanish onion, sliced", "1 large green pepper, sliced", "3 Tbsp. flour", "1/4 tsp. pepper", "1 tsp. salt", "1/4 lb. butter", "2 c. grated Mozzarella cheese", "1/2 c. Parmesan cheese"]
["Butter a 9 x 12-inch casserole.", "Put in layers: zucchini, onions, green peppers, tomato, flour, butter and cheeses.", "Cover and bake at 350\u00b0 for 1 hour 10 minutes.", "Uncover and bake 10 more minutes."]
["zucchini", "tomatoes", "Spanish onion", "green pepper", "flour", "pepper", "salt", "butter", "Mozzarella cheese", "Parmesan cheese"]