Cheesy One-Skillet Baked Ziti

ground beef (I used 85% lean grass-fed beef)

small onion, diced

can diced tomatoes

garlic powder

dried Italian seasoning

each black pepper and salt

cayenne pepper for some heat (optional)

whole-grain uncooked ziti or penne pasta (I used Barilla)

water

whole-milk ricotta cheese

mozzarella cheese

Optional for topping: 1 small tomato, diced, and fresh chopped parsley