Boil pasta until barely tender, drain and rinse. (Brown meat if using). Saute onion and pepper until softened. Add spaghetti sauce and combine with cooked pasta. Divide into 3 meals and store in gallon freezer bags. Divide mozzarella into 3 quart bags and keep with pasta bags.
To serve, thaw and spread in 9x13 baking pan. Sprinkle with mozzarella and 1/4 cup Parmesan. Cover and bake for 30 minutes at 350. Remove cover and bake 5 more minutes. Makes 18 servings.