1Preheat oven to 350 degrees. Brown meat, drain. Cook pasta according to package directions, drain. Combine soup and sour cream, set aside. Spray one large baking dish (larger than a 9x13) or two smaller baking dishes, if you want to share or freeze one, (freezes well). Mix tomato sauce and spaghetti together, add meat. Layer 1/2 of the spaghetti, cover with 1/2 sauce add 1/2 of the soup mixture then some cheese. Repeat layers. Loosely cover with foil and bake 55-65 minutes until heated thoroughly. Be sure to increase cooking time if you increase recipe and make in one baking dish, i.e. 1 1/2 increase = 1 1/2 hours, appx., cooking time.