Bistec Encebollado (Cuban Steak and Onions)

Step 1
Combine salt, pepper, and garlic powder in a small bowl. Sprinkle over steak slices on all sides to season. Transfer steak to a resealable plastic bag and add sliced onions, vinegar, and onion powder. Move steaks around to combine with the marinating ingredients. Seal the bag and refrigerate for 1 hour.

Step 2
Heat olive oil in a skillet over medium heat. Add steak and onion mixture; cook and stir until steak is browned and onions are soft, 4 to 6 minutes. Remove from the skillet and keep warm.

Step 3
Add beef broth, sofrito, and garlic to the skillet and cook over medium heat until garlic is golden brown, 2 to 3 minutes. Add steak and onions back to the skillet, cover, and simmer over low heat until onions and steak are cooked through, about 15 minutes.