Prime Rib Roast (The Best) | RICARDO

Ingredients

• 1 tbsp unbleached all-purpose flour
• 1 tsp salt
• 1 tsp ground black pepper
• 1 tsp onion powder
• 1/2 tsp garlic powder
• 1 roast beef prime rib, about 4.5 lbs (2 kg) with the bone, at room temperature for 1 hour