Grilled Steak and Potato Skewers

Ingredients

• 2 lbs sirloin steak (cut into 1-inch cubes)
• 4 cups Russet potatoes (peeled and cut into 1-inch thick slices)
• 2 cups yellow onion (cut into 1 x 1 ½-inch pieces)
• 3 tablespoons extra-virgin olive oil
• 3/4 teaspoon granulated garlic
• 1 1/2 teaspoon kosher salt (to taste)
• black pepper (to taste)