Pizza Pasta Casserole

from:   http://freezermealsforus.blogspot.com

2 lbs ground beef - I just used one pkg ground beef (a little over 1lb) and it was plenty!
1 large onion chopped
1 clove garlic minced
1 teaspoon Italian seasoning
2 tablespoons olive oil
2 (26 once) jars spaghetti sauce
16 ounces rotini pasta, cooked and drained
5 cups shredded mozzarella cheese
8 ounces sliced pepperoni

Brown ground beef, onion, and garlic in oil. Drain. Stir in pasta, seasoning, spaghetti sauce, and 3 cups cheese. Place mixture in 2 greased 9x13 pans or 2 8x8 pans. Sprinkle with remaining cheese. Top with pepperoni (I would mix the pepperoni in when you put the pasta in so it is throughout!). Cover and freeze or bake uncovered at 350 for 25-30 minutes or until heated through.  I froze one 8x8 pan and cooked the other one.  I like to add parmesan cheese too!