One-pot pasta is a quick and easy recipe that requires minimal cleanup. In a large pot, combine pasta, water, diced tomatoes, garlic, onion, and your choice of vegetables or protein. Bring the mixture to a boil and let it simmer until the pasta is cooked and the sauce has thickened. Season with salt, pepper, and herbs of your choice. One-pot pasta is a convenient and flavorful meal that can be customized to your liking.