Ingredients

  • 2 pounds beef tenderloin, choice grade, trimmed of fat
  • 1/2 cup olive oil, divided, plus 2 tablespoons
  • 2 tablespoons minced garlic
  • Dash dried oregano leaves
  • 3 tablespoons adobo seasoning (equal parts garlic powder, onion powder, ground cumin, and salt)*, divided
  • 2 large white onions, sliced in rings
  • 1/4 cup distilled white vinegar
  • 1 cup chicken stock
  • 1 stick unsalted butter
  • *Cook's Note: You can use store-bought without MSG.

Method

  • Cut beef tenderloin into 3-ounce medallions and pound to form scaloppini.
  • In a large bowl, combine 1/4 cup olive oil, garlic, oregano, and 2 tablespoons adobo.
  • Add the meat, stirring to coat evenly.
  • Place in the refrigerator and let marinate for at least 12 hours.
  • In a saute pan, heat the remaining 1/4 cup olive oil over medium-high heat.
  • Add the onions and saute until golden brown.
  • Add vinegar, chicken stock, and butter, and let simmer for 2 to 3 minutes.
  • Season with 1 tablespoon adobo, or more to taste.
  • Keep warm.
  • In another large saute pan, heat 2 tablespoons olive oil over medium-high heat.
  • Add beef scaloppini and quickly saute for 2 to 3 minutes on each side.
  • Remove from heat.
  • To serve, layer the beef scaloppini and the onion mixture and repeat layers 1 more time.
  • Ladle the broth from the onions over top as a sauce.
  • Serve immediately.