C.B.
I use this one from the Quick Cooking magazine. It makes two so you can freeze one:
PIZZA PASTA CASSEROLE
2 pounds ground beef
1 large onion, chopped
2 jars (28 ounces each) spaghetti sauce
1 package (16 ounces) spiral pasta, cooked and drained
4 cups (16 ounces) shredded mozzarella cheese
8 ounces sliced pepperoni
In a large skillet, cook beef and onion until meat is no longer pink; drain. Stir in spaghetti sauce and pasta. Transfer to two greased 13 x 9 x 2 inch baking dishes. Sprinkle with cheese, arrange pepperoni over the top. Cover and freeze one casserole for up to 3 months. Bake the second casserole, uncovered, at 350° for 25-30 minutes or until heated through. To use frozen casserole: Thaw in the refrigerator overnight. Bake at 350° for 35-40 minutes or until heated through. Yield: 2 casseroles (8-10 servings each).