Precious Moments Lasagna
["1 lb. lasagna noodles", "2 lb. ground beef", "1 medium onion, chopped", "3 cans tomato sauce (15 oz.)", "2 tsp. oregano", "1 tsp. salt", "8 oz. Cheddar cheese", "8 oz. Monterey Jack", "8 oz. Mozzarella", "Ricotta"]
["Brown beef in skillet.", "Push to one side and saute onion. Drain fat.", "Stir in 2 cans of tomato sauce, salt and oregano. Simmer for 10 minutes.", "Shred cheeses together (except Ricotta). Spread 1/2 can of remaining tomato sauce in bottom of a 13 x 9-inch pan.", "Add layer of uncooked noodles, slightly overlapping. Add half of the meat and sauce mixture.", "Sprinkle with 1/3 of cheese mixture.", "Repeat with one more layer.", "Add remaining noodles.", "Cover with remaining tomato sauce, Ricotta and cheese. Cover with foil.", "Bake at 375\u00b0 for 40 minutes."]
["lasagna noodles", "ground beef", "onion", "tomato sauce", "oregano", "salt", "Cheddar cheese", "Mozzarella", "Ricotta"]