Smoked Steak Skewers with Tomatoes, Onions and Olives

Ingredients

• 1 beef Top Sirloin Steak, 1- inch thick, about 1 pound, cut into 24, 1-inch cubes
• 1 large red onion, trimmed, halved, cut into 16 wedges
• 16 medium cherry tomatoes
• 16 large Queen Spanish olives
• 1/4 teaspoon salt
• 2 tablespoons olive oil
• 2 tablespoons red wine vinegar
• 1 teaspoon minced garlic
• 1/4 teaspoon crushed red pepper
• Grated manchego cheese (optional)