📖 Instructions

1. First things first, let's get those onions caramelized! In your small saucepan, melt 2 tablespoons of butter over medium heat. Add 2 large yellow onions, thinly sliced, and a pinch of salt. Cook, stirring occasionally, for about 20-25 minutes, or until deeply golden brown and caramelized. Set aside. This will be amazing!
2. Now for the star of the show – the beef! In your large bowl, combine 1.5 lbs of beef sirloin, cut into 1-inch cubes, with 1/4 cup of olive oil, 2 tablespoons of balsamic vinegar, 1 tablespoon of Worcestershire sauce, 1 teaspoon of smoked paprika, 1/2 teaspoon of garlic powder, and salt and pepper to taste. Give everything a good mix. Trust me, this marinade is killer! Marinate for at least 2 hours, or preferably longer; overnight is even better. Seriously, the longer it marinates, the more flavourful it gets!
3. Once your beef is nicely marinated, grab those skewers! Thread the beef cubes onto the skewers, alternating with the caramelized onions. Leave a little space between each piece for even cooking. Tip: Soak wooden skewers in water for 30 minutes before using to prevent burning. Don't forget!
4. Preheat your grill or grill pan to medium-high heat. Place the kebabs on the hot grill and cook for about 4-5 minutes per side, or until the beef is cooked to your desired doneness. Use a meat thermometer to ensure it reaches an internal temperature of 160°F (71°C) for medium-well. Don't rush it, perfection takes time!
5. While the kebabs are grilling, prepare the balsamic glaze (because who doesn't love a delicious balsamic glaze!). In the same small saucepan, simmer 1/4 cup of balsamic vinegar over medium heat for about 10-12 minutes, or until it reduces and thickens slightly. Remove from heat and set aside.
6. Once the kebabs are cooked, remove them from the grill and let them rest for a few minutes. Then, drizzle generously with the balsamic glaze. It's gonna be delicious!
7. Serve immediately and enjoy! These beef kebabs are amazing served with rice, salad, or your favorite sides. You can even add a side of tzatziki sauce for an extra yummy treat!