Juicy Balsamic Marinated Steak Kebabs with Rosemary Tomatoes - My Home Made Recipe

Ingredients

• 1/2 cup (120 ml) balsamic vinegar
• 2 tablespoons honey
• 1 tablespoon whole grain mustard
• 3 cloves garlic, minced
• 1 teaspoon kosher salt
• 1/2 teaspoon black pepper
• 1 lb (450 g) sirloin steak, cut into 1-inch cubes
• 2 cups (300 g) grape tomatoes
• 2 tablespoons olive oil
• 2 tablespoons chopped fresh rosemary
• 1 1/2 lb (680 g) baby potatoes
• 1 tablespoon olive oil, for grill grates
• 6 metal skewers or soaked wooden skewers