Balsamic Marinated Flank Steak-Low Carb

READY IN: 15mins
Recipe by Lv2Sun

Low Carb Flank Steak Marinade

Top Review by Rose G.

This is wonderful! My husband was having a fit because I bought flank steak. The next day when we ate it he could not stop talking about how good it was. I did add a little extra garlic. I had two steaks so we had the other the next day. This is a repeat!

Ingredients Nutrition

  • 1 12 lbs flank steaks
  • 13 cup finely chopped onion
  • 1 garlic clove, minced
  • 3 tablespoons balsamic vinegar, divided
  • 2 teaspoons olive oil
  • 12 teaspoon pepper
  • 14 teaspoon salt


  1. Cut across flank steak in criss-cross pattern, cutting 1/8” deep.
  2. Place in shallow glass baking dish. In small bowl, stir together onion, garlic, 2 T vinegar, oil, salt & pepper.
  3. Pour over steak, turning to evenly coat both sides Cover and refrigerate at least 4 hours or overnight Heat grill Remove& discard excess marinade from steak Sprinkle both sides with . Place on grill over medium heat
  4. Cook 9-12 minutes or until internal temperature reaches 140 for medium-rare, turning once.
  5. Place on cutting board & let stand 5 minutes
  6. Cut on diagonal into thin slices.
  7. Pour accumulated juices over slices; drizzle with remaining 1 T vinegar.

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