Heavenly Onion Casserole
["2 Tbsp. butter", "8 oz. fresh mushrooms, sliced", "1 can cream of mushroom soup", "2 tsp. soy sauce", "6 to 8 slices Swiss cheese", "3 sweet onions, sliced", "1 c. or 4 oz. Swiss cheese, shredded", "1 (5 oz.) can evaporated milk", "6 to 8 slices French bread"]
["In large skillet, melt butter over low heat.", "Saute onions and mushrooms until tender.", "Put this in 2-quart casserole dish. Sprinkle shredded cheese on top.", "Combine soup, milk and soy sauce.", "Pour this over cheese mixture.", "Top with bread and cheese slices.", "Cover and refrigerate for 4 hours or overnight.", "Bake in 375\u00b0 oven, loosely covered, for 30 minutes.", "Uncover and bake 15 to 20 minutes more.", "Let stand 5 minutes before serving.", "Yields 6 to 8 servings."]
["butter", "fresh mushrooms", "cream of mushroom soup", "soy sauce", "Swiss cheese", "sweet onions", "Swiss cheese", "milk", "bread"]