I start by placing the sliced steak in a large resealable bag. Then I add in the onion rings, beef stock, olive oil, vinegar, garlic, Sazón, salt, and oregano. Once it’s sealed, I massage the bag gently to coat everything evenly. Then it goes straight into the fridge for at least 4 hours—but if you can leave it overnight, even better!
When I’m ready to cook, I pull out my deep skillet and set it over medium-high heat. Since the marinade already has olive oil, I don’t add extra. It smells incredible the second it hits the heat!
I pour everything from the bag into the hot skillet—yes, onions, beef, and marinade all at once. I bring it to a boil, stirring occasionally to let the flavors meld. Once it’s bubbling, I reduce the heat to low and cover it up, letting it simmer gently for 40 minutes.
After about 40 minutes, I poke the beef with a fork. If it falls apart easily, it's ready. If not, I give it another 5–10 minutes on low. Patience is key here!
When the beef is beautifully tender and the onions are soft and golden, it’s done. I like to spoon the saucy meat over a pile of white rice and top it with extra onions. It’s hearty, satisfying, and packed with flavor.