Place the steaks on a plate and sprinkle salt, pepper, oil and lemon juice on them. Let them sit on the plate for 10 minutes.
Meanwhile, use a regular pan or a cast iron one and heat it up on the stove. Let it be really hot.
Add the meat and cook until no longer pink. The meat should sizzle when you put it in the pan. The cooking time is about 3-4 minutes, but use your judgment as each cut is different and could take more or less time.
When cooked remove the steaks from the pan and place them on a warmed plate to rest.
While the meat is cooking, slice the onions. If you cook for 4 people, for example, 2-3 large onions should be enough.
In the same pan you cooked the steaks, add the butter and let it melt.
Cook onions over medium heat for 15-20 minutes or until onions are golden brown, stirring frequently. Add salt and pepper on them and move them often in the pan with a spatula.
Note: If you want to add jalapeno pepper, add it with the onions. Same with the sliced potato. These are optional ingredients that can go with the onions.
When the onions are golden brown, soft and cooked through, remove them from the pan and place them over the steaks.
Serve them right away with Mexican rice, Authentic Mexican Beans, Ensalada de Nopales or Cactus Salad.
Notes
Meat Selection: Use thin beef steaks, like sirloin. If unavailable, any thin-cut steak will work. Flank steak is a good alternative.
Marinating the Steak: Marinate your steaks in oil, lemon juice, salt, and pepper for at least 10 minutes to enhance flavor.
Cooking the Steak: Cook until no longer pink. Adjust cooking time based on steak thickness; generally, 3-4 minutes per side for thin cuts.
Onions: Use yellow or white onions, sliced thinly. Cook them in the same pan after the steak for added flavor.
Serving Suggestions: Serve with your favorite sides like rice or beans. Bistec Encebollado is versatile and pairs well with various accompaniments.
Storage Tips: Keep leftovers in an airtight container in the fridge for up to 3-4 days. Reheat gently to maintain quality.
Freezing: You can freeze the dish for up to 3 months. Thaw in the fridge before reheating.