Crock Pot Pizza Casserole 1 Box Spiral Pasta (uncooked but rinsed) 1 pound lean ground beef 1 onion, chopped 2 cloves garlic, minced 1 green bell pepper, chopped 1 cup sliced pepperoni 16 ounces pizza sauce or pasta sauce 1/2 cup water 1 cup shredded mozzarella cheese