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Ultimate Slow-Roasted Prime Rib

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PREP TIME
5 min
COOKING TIME
80 min
TOTAL TIME
100 min
SERVINGS
8 servings
Dinner
Ultimate Slow-Roasted Prime Rib
Ingredients
  • 1 (4 pound) boneless prime rib roast
  • 2 tablespoons olive oil
  • 6 cloves garlic, minced
  • 3 teaspoons salt
  • 3 teaspoons ground black pepper
  • 1 teaspoon dried thyme
  • 1 teaspoon dried rosemary
Instructions
1
Preheat the oven to a high temperature, specifically 500 degrees Fahrenheit or 260 degrees Celsius.
2
Position the prime rib in a suitable roasting dish, ensuring the fattier side is facing upwards.
3
Mix together olive oil, minced garlic, salt, pepper, dried thyme, and fragrant rosemary in a food processor until well combined. Pour this marinade over the prime rib, allowing it to come to room temperature for approximately 15 minutes.
4
Place the prime rib in the preheated oven and bake for an initial 20 minutes. Afterwards, lower the oven temperature to a more moderate level of 325 degrees Fahrenheit or 165 degrees Celsius.
5
Continue cooking the prime rib until it reaches your desired level of doneness, either medium-rare or when an instant-read thermometer registers at least 145 degrees Fahrenheit or 63 degrees Celsius, requiring an additional 60 to 75 minutes of cooking time.