Flat Iron Steak - marinated in red wine, Worcestershire sauce, garlic and salt and black pepper for several hours in the fridge. Steak was allowed to come to room temperature and then browned in coconut oil on sauté in the instant pot and removed to a plate. Deglazed the pot with a bit of water. Onions sautéed until soft and starting to brown, then added the steak and juices back to the pot. Added the marinade, whole canned tomatoes and their juice, Worcestershire sauce, and Italian style seasoning to the pot. Cooked on Manual, High Pressure for 20 minutes, Natural Release for 25 minutes. Removed steak and vegetables from the pot and thickened the sauce for gravy and seasoned to taste with more Worcestershire sauce and black pepper.