Prepare this quick recipe for Onion Steak, a delicious way to cook steak. This recipe is very common on Mexican tables, as it can be prepared quickly and can also be served in tacos, with salsa, accompanied by beans, rice, or salad.The best part is that to prepare this dish, you only need 5 ingredients and a few minutes to cook it, all in one pan, and I assure you that the flavor is unmatched. Remember to use good quality meat for better flavor.