Grilled Flank Steak with Onions
Elevate your next barbecue with this irresistible Grilled Flank Steak with Onions recipe, a perfect blend of bold flavors and simple techniques. Tender, marinated flank steak is infused with a savory-sweet mix of soy sauce, honey, garlic, and olive oil, then expertly grilled to juicy perfection. The star of the dish, golden caramelized onions, is kissed with balsamic vinegar, adding a tangy-sweet contrast that complements the smoky char of the meat. Finished with a fresh sprinkle of parsley, this entrée is as elegant as it is easy to prepare. Ready in just 35 minutes (plus marinating time), it’s a crowd-pleasing option for summer cookouts or cozy weeknight dinners. Pair it with roasted vegetables, creamy mashed potatoes, or a crisp green salad for a complete, mouthwatering meal.
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Recipe Information
Ingredients
- 1 pound flank steak
- 3 tablespoons olive oil
- 2 tablespoons soy sauce
- 1 tablespoon honey
- 3 units garlic cloves, minced
- 1 teaspoon ground black pepper
- 1 teaspoon kosher salt
- 2 units yellow onions, sliced
- 2 tablespoons butter
- 1 tablespoon balsamic vinegar
- 2 tablespoons fresh parsley, chopped
Instructions
Place the flank steak in a resealable plastic bag or shallow dish.
In a small bowl, whisk together 2 tablespoons of olive oil, soy sauce, honey, minced garlic, black pepper, and salt to make the marinade.
Pour the marinade over the steak, ensuring it is fully coated. Seal the bag or cover the dish and refrigerate for at least 1 hour, or up to 24 hours for best results.
Preheat your grill to medium-high heat (about 400°F).
While the grill is preheating, heat the remaining 1 tablespoon of olive oil and butter in a skillet over medium heat.
Add the sliced onions to the skillet and sauté for 10–12 minutes, stirring frequently, until the onions are golden brown and caramelized.
Stir the balsamic vinegar into the onions and cook for an additional 1–2 minutes. Remove from heat and set aside.
Remove the flank steak from the marinade and pat it dry with paper towels. Discard the marinade.
Grill the steak for 4–6 minutes per side for medium-rare, or until it reaches your desired level of doneness. Use a meat thermometer to check for an internal temperature of 130–135°F for medium-rare.
Remove the steak from the grill and let it rest on a cutting board, loosely covered with foil, for 5 minutes.
Slice the steak thinly against the grain to ensure tenderness.
Top the sliced steak with the caramelized onions and garnish with chopped fresh parsley before serving.
Serve warm with your favorite sides, such as roasted vegetables or mashed potatoes.
Nutrition Facts
Calories |
1847 | ||
|---|---|---|---|
% Daily Value* |
|||
| Total Fat | 129.3 g | 166% | |
| Saturated Fat | 42.1 g | 210% | |
| Polyunsaturated Fat | 7.5 g | ||
| Cholesterol | 479 mg | 160% | |
| Sodium | 3584 mg | 156% | |
| Total Carbohydrate | 36.1 g | 13% | |
| Dietary Fiber | 3.1 g | 11% | |
| Total Sugars | 24.3 g | ||
| Protein | 137.5 g | 275% | |
| Vitamin D | 0.6 mcg | 3% | |
| Calcium | 121 mg | 9% | |
| Iron | 13.5 mg | 75% | |
| Potassium | 1790 mg | 38% | |
*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
