Preheat oven to 325 degrees. ... 1/6 of cooked spaghetti; top with pat of butter; a layer of sauce; sprinkle with 1 portion ... generous servings per casserole.
Brown and drain hamburger and ... 10 minutes. Cook spaghetti broken into pieces and add to meat and sauce mixture. Make a white sauce: ... 1/2 cup grated American cheese on top and bake ... room temperature before baking.