Grilled marinated flank steak isn’t just dinner—it’s juicy, smoky perfection packed with bold flavor. Forget dry, tough steak; this marinade transforms a humble cut into a show-stopping main. Ready to impress taste buds and look like a grill master without breaking a sweat?
Why This Recipe Works
- Bold Flavor: The marinade infuses the beef while tenderizing it, and caramelized onions add a sweet, rich balance.
- Perfect Texture: Flank steak benefits from marinating and slicing against the grain for maximum tenderness.
- Quick & Versatile: Marinade comes together fast; grilling only takes minutes, making it ideal for weeknights or gatherings.
- Balanced Meal: Pairs well with roasted vegetables, mashed potatoes, or a crisp salad for a complete plate.
- Approachable Yet Impressive: Simple ingredients deliver restaurant-quality results that appeal to casual cooks and grill masters alike.
An Explosion of Flavor in Your Mouth
Grilled marinated beef with caramelized onions delivers bold flavors in every bite. This dish marries the smoky char of perfectly grilled beef with the deep, sweet richness of slow-cooked onions.
The marinade infuses the beef with a harmonious blend of spices, enhancing its natural savoriness while tenderizing the meat. Meanwhile, the caramelized onions add a touch of sweetness, creating a satisfying and unforgettable balance.
This recipe is versatile and ideal for weeknight dinners or weekend gatherings. The marinade comes together quickly, and the grilling process makes it perfect for warm evenings or when you want to savor a bit of summer all year long. Pair it with roasted vegetables, creamy mashed potatoes, or a crisp green salad for a complete meal.
Whether you’re an experienced grill master or a casual cook, this recipe is approachable yet impressive. Plus, the aroma of the beef sizzling on the grill and the onions browning to golden perfection will have everyone gathering around the table in anticipation. Ready to get started? Let’s fire up the grill and bring out the best in these simple yet stunning ingredients!
Grilled Marinated Beef with Caramelized Onions
Ingredients
- 2 lb. of flank steak salt and pepper
For the Marinade
- 2 tablespoons soy sauce
- 2 tablespoons sherry
- 2 tablespoons Dijon mustard
- 3 tablespoons brown sugar
- 2 teaspoons curry powder
For Caramelized Onions
- 1 tablespoon olive oil
- 1 tablespoon butter
- 2 large onions sliced into thin rounds
- 2 teaspoons brown sugar
- 5 tablespoons chicken stock
Instructions
- There's not a lot of prep for this grilled steak and caramelized onions recipe. Just be sure to have all the ingredients ready to go. Peel and slice the onions and make or defrost the chicken stock.
Marinated Steak
- Mix the marinated ingredients in a large, shallow glass bowl. Remove 1/4 of the marinade and reserve for basting.
- Gently score the flank steak, add to the marinade, cover, and let sit at room temperature for 1-2 hours or refrigerate if marinating longer.
- Fire up your grill, remove the steak from the marinade, and grill for about 5 minutes per side when ready.
- Discard the marinade and use the reserved marinade to baste.
Caramelized Onions
- Heat the butter and oil in a heavy-bottomed pan until they are almost smoking hot. Add the onions and sauté until translucent ...approximately 10 to 15 minutes.
- Add the brown sugar and stock, season with salt and pepper, reduce heat, and simmer until all the liquid is absorbed.
To Serve
- Slice steak into 1/4 inch pieces, top with onions, and serve. Of course, a hearty red wine goes great with this meal and side dishes like roasted potatoes and grilled veggies.
Notes
Good Cuts of Beef for Marinating and Grilling
The best cuts of beef for marinating and grilling are those that benefit from added flavor and tenderization. Here are some top options:
| Cut | Why it Works | Cooking Tips |
|---|---|---|
| Flank Steak | Lean and flavorful but can be tough without proper preparation. Marinating enhances its taste and tenderness. | Grill quickly over high heat and slice thinly against the grain for maximum tenderness. |
| Skirt Steak | Rich, beefy flavor and absorbs marinades well due to its loose grain. | Grill on high heat for a short time and serve medium-rare to prevent toughness. |
| Flat Iron Steak | Tender with good marbling, making it excellent for marinating and grilling. | Cook medium-rare to medium for juicy and flavorful results. |
| Tri-Tip | Lean yet tender, and a marinade complements its natural flavor. | Grill over medium heat to avoid drying out. |
| Top Sirloin | Affordable and versatile, benefits from a marinade to boost flavor. | Cook to medium-rare or medium for best results. |
| Chuck Steak | Budget-friendly and flavorful but tough. Marinating tenderizes it beautifully. | Use longer marinating times and cook over medium-high heat. |
General Tips for Marinating and Grilling
- Acidity: Use ingredients like vinegar, citrus, or yogurt in your marinade to break down tough fibers.
- Marinating time: Tougher cuts benefit from longer marinating (4-12 hours), while more tender cuts only need 30 minutes to 2 hours.
- Resting time: After grilling, allow the meat to rest for 5-10 minutes to redistribute juices.
| Category | Tip | Details |
|---|---|---|
| Marinating Tips | Choose the Right Marinade | Balance acid (vinegar, citrus, yogurt), oil, and seasonings to tenderize and flavor. Add garlic, ginger, or herbs for depth. |
| Time it Right | Tough cuts (flank, skirt, chuck): 4–12 hrs. Tender cuts (sirloin, flat iron): 30 mins–2 hrs to avoid breaking down texture. | |
| Use Non-Reactive Containers | Choose glass, stainless steel, or food-safe plastic bags to prevent reaction with marinade. | |
| Refrigerate While Marinating | Always marinate beef in the refrigerator to prevent bacterial growth. | |
| Pat Dry Before Grilling | Remove excess marinade to prevent steaming and promote proper sear. | |
| Grilling Tips | Preheat the Grill | A hot grill ensures sear marks and prevents sticking. |
| Oil the Grill Grates | Brush grates with oil or use a paper towel dipped in oil to reduce sticking. | |
| Monitor Cooking Times | Thin cuts: high heat, 3–5 min per side. Thicker cuts: medium heat, use thermometer for doneness. | |
| Use Direct & Indirect Heat | Sear over direct heat, then move to indirect heat to cook through without burning. | |
| Flip Sparingly | Turn beef only once for even cooking and good sear. | |
| Rest Before Slicing | Let beef rest 5–10 min after grilling for juices to redistribute. | |
| Slice Against the Grain | Cut against the grain for tenderness, especially with flank or skirt steak. |
