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Sliced BBQ Beef Flank Steak on a cutting board

The Best BBQ Beef Flank Steak with Caramelized Onions


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  • Author: Susan
  • Total Time: 35 Minutes
  • Yield: 6 servings 1x
  • Diet: Low Calorie

Description

Is there anything better than a juicy steak that’s healthy, flavorful, and helps you feel great?

 If you’ve been searching for the best BBQ beef flank steak recipe to kickstart your weight loss journey and help you fit better into your favorite clothes, you’re in the right place.


Ingredients

Units Scale
  • Cooking Spray - 4 Sprays
  • 4 Beef Bouillon Cubes
  • 2 Teaspoons of Worcestershire sauce
  • 1 Teaspoon of Sea Salt
  • 1 1/2 pounds of Lean Beef Flank Steak
  • 2 Small Onions cut into 1/2 inch thick half moon slices


Instructions

  1. In a mini food processor crush your beef bouillon cubes into a fine powder. If you do not have a mini food processor you can use a mortar and pestle. 
  2. In a medium bowl add the Worcestershire sauce, salt, beef bouillon powder and 6 tablespoons of water to make a thin marinade.
  3. Place your uncooked flank steak in a Gallon size Ziplock bag and add the marinade on top. Seal the bag closed and let marinate for a minimum of 10 minutes.
  4. Slice your onion into 1/2 inch thick half-moons size.
  5. Coat your grill pan with non-stick spray and heat over medium high. Place your marinated flank steak in the center of the pan. Scatter onions around steak. Cook turning once or twice, until onions are wilt slightly and char deeply in spots and steak is charred and cooked to desired doneness, 4-6 minutes.
  6. Transfer steak and onions to a cutting board. Let steak rest for 10 minutes. Thinly slice steak against the grain, Serve with onions.

Notes

  • Choose the Right Cut: Select a high-quality, well-trimmed flank steak for the best results. Look for a bright red color and minimal visible fat.
  • Marinate for Tenderness: Use an acidic marinade with ingredients like Worcestershire sauce, citrus juice, or vinegar to tenderize and enhance flavor. Allow the steak to marinate for at least 30 minutes or up to 8 hours.
  • Pat Dry Before Grilling: Remove excess marinade and pat the steak dry with paper towels to prevent steaming and encourage a proper sear.
  • Preheat the Grill: Preheat your indoor grill pan over medium-high heat until it’s hot enough that water droplets sizzle when splashed on the surface.
  • Use Oil Sparingly: Lightly oil the grill pan or brush the steak with a small amount of high-smoke-point oil, like avocado or grapeseed oil, to prevent sticking.
  • Season Generously: Sprinkle both sides of the steak with salt and pepper (or other preferred spices) just before grilling.
  • Cook with Care: Grill the steak for 3–5 minutes per side for medium-rare, or until it reaches your desired doneness. Use a meat thermometer for accuracy (130–135°F for medium-rare).
  • Let It Rest: Allow the steak to rest for 5–10 minutes after grilling to redistribute the juices and ensure a tender bite.
  • Slice Against the Grain: Cut the steak into thin slices against the grain to make it more tender and easier to chew.
  • Keep Ventilation On: Use a vent or fan to manage smoke and odors in your kitchen during grilling.
  • Prep Time: 20 Minutes
  • Cook Time: 15 minutes
  • Category: Dinner
  • Method: Grill
  • Cuisine: American

Nutrition

  • Serving Size: 4 Ounces
  • Calories: 186
  • Sugar: 2.7 g
  • Sodium: 486.8 mg
  • Fat: 6 g
  • Carbohydrates: 6.5 g
  • Protein: 25.2 g
  • Cholesterol: 68.2 mg