Mama Loves Food! · Jun 18, 2015

The BEST Flank Steak Marinade.

I've had flank steak at friends' homes and in restaurants before, but have never attempted it myself. Until yesterday. Because experimenting on a house full of guests is always the way to go. Right? This recipe is bits and pieces of about a half dozen different recipes I found and liked around the internet. Plus, a little bit of my very own love. This is awesome by itself, but would also taste fantastic in fajitas!
UPDATE: This post originally appeared in 2011, but I'm giving it a refresher because it's summer and yay for flank steak! I still love this recipe - my favorite way to eat it is in a fajita bowl with grilled peppers and fresh guacamole!


The BEST Flank Steak Marinade Ingredients:

  • 1 cup olive oil
  • 3/4 cup soy sauce
  • 1/2 cup balsamic vinegar
  • 1/3 cup fresh lemon juice
  • 2 tablespoons stone ground mustard (the kind with whole mustard seeds, I use Grey Poupon)
  • 6 garlic cloves
  • 1 teaspoon ground black pepper
  • 1/4 cup Worcestershire sauce
  • 1/4 tablespoon onion powder
  • 3 pounds flank steak

The BEST Flank Steak Marinade and Grilling Directions:

  1. Add all ingredients except flank steak to blender and run until smooth, reserve 1 cup for basting and dipping.
  2. Pour remaining marinade over steak and refrigerate in a shallow pan or ziploc bag for at LEAST 24 hours. (I like to freeze mine in the marinade for later!)
  3. Cook on a medium heat grill, basting continually, for 5 minutes on each side, or until you reach desired doneness. (This can also be done under the broiler in your oven).
  4. Allow to rest 2 minutes before cutting.
  5. Enjoy!


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