grilled prime rib with bone marrow butter

Ingredients

• 4 -5 pounds prime rib
• 3 tablespoons yellow mustard
• 1 tablespoon kosher salt
• 1 tablespoon black pepper
• 1 tablespoon granulated garlic
• 8 beef marrow bones, canoe cut & clean
• Olive oil
• Kosher salt & ground pepper
• 2 sticks softened butter
• 4 large cloves garlic, minced
• 1 tablespoon fresh chopped rosemary
• 1 bunch thyme
• 1 pair chopsticks