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Slow-Roasted Prime Rib

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PREP TIME
15 min
COOKING TIME
220 min
TOTAL TIME
735 min
SERVINGS
20 servings
Dinner
Slow-Roasted Prime Rib
Ingredients
  • 1 (10 pound) bone-in standing rib roast
  • 2 tablespoons kosher salt
  • 1/2 cup butter, softened
  • 3 tablespoons chopped fresh rosemary
  • 2 tablespoons chopped fresh thyme
  • ground black pepper to taste
Instructions
1
Preheat the oven to a moderate temperature of 200 degrees Fahrenheit (95 degrees Celsius) before commencing the cooking process.
2
Allow the roast to come into contact with the refrigerator for an extended period of time, ideally 8 hours or overnight, to allow the flavors to meld together.
3
Once removed from the refrigerator, permit the roast to reach room temperature before proceeding with the recipe.
4
Mix together a small quantity of butter, rosemary, thyme, and black pepper in a compact bowl to create a harmonious blend of flavors.
5
Apply the butter mixture evenly over the roast, then place it in a substantial roasting pan to prepare for cooking.
6
Cook the roast in the preheated oven until it reaches an internal temperature of 115 degrees Fahrenheit (46 degrees Celsius) for a medium-rare dish, approximately 3 and a half hours.
7
Upon completion of the cooking process, remove the roast from the oven and cover it with aluminum foil to allow it to rest for 20 minutes.
8
Simultaneously, increase the oven temperature to a high heat of 500 degrees Fahrenheit (260 degrees Celsius) for additional browning.
9
Once the oven has reached the desired temperature, uncover the rested roast and return it to the oven for an additional 6 to 10 minutes of cooking time.
10
Slice the roast and serve it immediately.