Orlando Spiedini alla Romano Spiedini alla Romana Recipe

Ingredients

• 1 pound beef (sirloin or ribeye), cut into 1-inch cubes
• 1 pound pork tenderloin, cut into 1-inch cubes
• 1 pound chicken breast, cut into 1-inch cubes
• 8 slices prosciutto, cut into strips
• 1 cup cherry tomatoes
• 1 red bell pepper, cut into 1-inch pieces
• 1 yellow bell pepper, cut into 1-inch pieces
• 1 medium onion, cut into chunks
• 1/4 cup olive oil
• 4 cloves garlic, minced
• 2 tablespoons fresh rosemary, chopped
• 1 tablespoon fresh thyme, chopped
• Salt and pepper, to taste
• 1 cup grated Pecorino Romano cheese (for serving)
• 1/4 cup balsamic vinegar
• 2 tablespoons Dijon mustard
• 1 teaspoon red pepper flakes (optional)