10 slices French bread both sides buttered slice 14-inch thick and use more if needed
1 10 34 oz can cream of mushroom soup
12 c milk
2 tsp soy sauce
salt and pepper to taste
Directions
Butter bread on both sides Saut onions in 2 tablespoons butter Butter 9 x 13-inch baking dish Layer mushrooms onions cheese and bread Mix soup milk and soy sauce and pour over top Sprinkle with salt and pepper Cover and refrigerate overnight Bake uncovered at 350 for 45 minutes