Bistec Encebollao

Ingredients

• 2 pounds beef sirloin steak , thinly sliced against the grain
• 2 large white onions , sliced into rings
• 1 cup beef stock
• 0.5 cups olive oil
• 0.25 cups distilled white vinegar
• 2 tablespoons minced garlic
• 1 packet Sazón seasoning , .18 ounce
• 1 teaspoon salt
• 1 pinch dried oregano

Instructions

1. 1

   Combine steak, onions, beef stock, olive oil, vinegar, garlic, Sazón seasoning, salt, and oregano in a large resealable plastic bag; toss to coat steak with marinade. Squeeze out excess air and seal the bag. Marinate in the refrigerator at least 4 hours up to 2 days.

2. 2

   Transfer steak and marinade to a large deep skillet; bring to a boil. Reduce heat to low; cover and simmer until steak is fork-tender, about 40 minutes.