Summer Squash Tomato Casserole
["1 1/2 lb. summer squash", "4 tomatoes, sliced", "2 medium onions, sliced", "1 tsp. salt", "1/8 tsp. pepper", "1/2 c. dry bread crumbs", "1/2 c. grated cheese", "2 Tbsp. butter"]
["Cut squash into halves.", "Remove seeds and cover with tomatoes and onions.", "Sprinkle with next 4 ingredients and top with bits of butter.", "Cover and bake at 350\u00b0 for 45 minutes.", "Serves 6."]
["summer squash", "tomatoes", "onions", "salt", "pepper", "bread crumbs", "grated cheese", "butter"]