Home Health-Fitness 1 whole spaghetti squash 2 tablespoons olive oil 1 red pepper, diced 1 zucchini, diced 1 carrot, shredded 2 cloves garlic, minced 1 tomato, diced 16 ounces tomato sauce 4 ounces shredded mozzarella cheese 1/4 cup shredded Parmesan