Season the steak chunks to taste with sea salt and freshly ground pepper.
2 lbs. rib-eye steak, Sea salt and fresh black pepper
In a large bowl, combine the olive oil, balsamic vinegar, garlic, and fresh thyme.
⅓ cup extra-virgin olive oil, ⅓ cup balsamic vinegar, 3 garlic cloves, 2 tbsp. fresh thyme
Add the steak and mushrooms to the bowl and gently mix until well-coated.
16 oz. button mushrooms
Cover and let marinate for 30 minutes.
Preheat your grill to medium-high.
Thread the beef and mushrooms alternately onto skewers.
Wood or metal skewers
Place the skewers on the grill and cook for 10 to 12 minutes, flipping every 2 to 3 minutes.