Ingredients
Equipment
Method
Marinate the sirloin
- Whisk together olive oil, soy sauce, Worcestershire sauce, red wine vinegar, minced garlic, smoked paprika, garlic powder, and black pepper until smooth. Toss the sirloin cubes in the marinade, cover, and refrigerate for at least 30 minutes to coat well.
Prep the grill and skewers
- Soak wooden skewers in water for 30 minutes to prevent scorching. Preheat the grill to high heat and oil the grates so the kabobs release cleanly.
Assemble skewers
- Thread steak cubes alternating with red bell pepper chunks, green bell pepper chunks, red onion wedges, and whole cremini mushrooms onto the skewers. Keep pieces snug so they char at the same pace.
Grill to doneness
- Grill skewers over high heat for 2-3 minutes per side (8-12 minutes total). Look for deeply charred sirloin cubes with caramelized edges and blistered vegetables while the marinade darkens into a glossy crust.
- Check doneness with an instant-read thermometer: remove at 130°F for medium-rare or 145°F for medium. Let the skewers keep cooking slightly off the grill for even results.
Rest and serve
- Rest the skewers for 3-4 minutes off the grill before serving. Garnish with fresh parsley and serve with lemon wedges.
Notes
For the best char, grill on a preheated high-heat grate and don’t crowd the skewers. Store leftovers in the refrigerator up to 3 days in a covered container; reheat gently in a skillet or oven until warmed through. Freezing isn’t recommended for the vegetables, but you can freeze cooked steak cubes if needed. For a lower-sodium option, choose low-sodium soy sauce and reduce added salt elsewhere if you add any.
