
Grilled Beef with Caramelized Onion and Garlic Butter
Prep
20 mins
Cook
35 mins
Servings
4
Difficulty
Medium
This is one of my favorite weeknight dinners because it looks impressive but comes together in just 35 minutes. Tender sirloin steaks get a beautiful crust on the grill while caramelized onions and garlic butter cook down to pure golden perfection. The garlic in this dish is more than just flavor: it's packed with compounds that support heart health and boost immunity. What I love most is how affordable and simple it is, yet it tastes like something from a fancy restaurant. The balsamic vinegar and Worcestershire sauce add depth without requiring any complicated techniques.
Ella x
Ingredients
- 4beef sirloin steaks(1.5 inches thick, about 8 oz each)
- 4yellow onions(thinly sliced)
- 4 tablespoonsbutter(divided)
- 6garlic cloves(minced)
- 2 sprigsfresh thyme
- 2 tablespoonsbalsamic vinegar
- 237 mlbeef broth
- 2 tablespoonsolive oil
- 1½ teaspoonssalt
- 1 teaspoonblack pepper(freshly ground)
- 1 tablespoonworcestershire sauce
Detail level
Instructions
- 1
Pat the beef steaks dry with paper towels and season generously on both sides with salt and black pepper. Let them rest at room temperature for 15 minutes to ensure even cooking.
Tip: Room temperature meat cooks more evenly than cold meat straight from the refrigerator.
- 2
Heat 2 tablespoons of butter in a large skillet over medium heat. Add the sliced onions and cook for 3-4 minutes, stirring occasionally, until they begin to soften and release their moisture.
Tip: Don't rush the onions; slow cooking develops their natural sweetness.
- 3
Reduce heat to medium-low and continue cooking the onions for 12-15 minutes, stirring occasionally, until they're deeply golden and caramelized. Add balsamic vinegar and beef broth, then simmer for 2 minutes. Set aside and keep warm.
Tip: If onions stick to the pan, add a splash of water to deglaze.
- 4
Preheat your grill to high heat. Brush the grill grates with oil to prevent sticking.
Tip: A hot grill creates better sear marks and locks in the meat's juices.
- 5
Place the steaks on the grill and cook for 4-5 minutes on the first side without moving them. Flip once and cook for another 4-5 minutes for medium-rare doneness. Adjust time based on your preferred doneness and thickness.
Tip: Use a meat thermometer: 130-135°F for medium-rare, 135-145°F for medium.
- 6
In the final minute of grilling, prepare the garlic butter by combining the remaining 2 tablespoons of softened butter with minced garlic and Worcestershire sauce in a small bowl.
Tip: Prepare this mixture while steaks are finishing to keep everything warm.
- 7
Remove steaks from the grill and immediately place a portion of garlic butter on top of each steak, allowing it to melt into the meat. Arrange the caramelized onions over the steaks.
Tip: The residual heat from the steak will melt the butter perfectly without overcooking it.
- 8
Garnish with fresh thyme sprigs and serve immediately while the steaks are still hot and the butter is melted.
Tip: For presentation, you can drizzle any pan juices from the onions around the plate.
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