Prime Rib Roast With Mustard Horseradish Sauce Recipe

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Prime Rib Roast  With Mustard Horseradish Sauce
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  1. Two hours before roasting, remove the meat from the refrigerator and allow it to come to room temperature.
  2. Preheat the oven to 500 degrees F (see note).
  3. Place the oven rack on the second lowest position.
  4. Place the roast in a pan large enough to hold it comfortably, bone-side down, and spread the top thickly with the salt and pepper.
  5. Roast the meat for 45 minutes.
  6. Without removing the meat from the oven, reduce the oven temperature to 325 degrees F and roast for another 30 minutes.
  7. Finally, increase the temperature to 450 degrees F and roast for another 15 to 30 minutes, until the internal temperature of the meat is 125 degrees F.
  8. (Be sure the thermometer is exactly in the center of the roast.) The total cooking time will be between 1 1/2 and 1 3/4 hours.
  9. Meanwhile, make the sauce.
  10. Remove the roast from the oven and transfer it to a cutting board.
  11. Cover it tightly with aluminum foil and allow the meat to rest for 20 minutes.
  12. Carve and serve with the sauce.
  13. Note: Be sure your oven is very clean before setting it at 500 degrees F.
  14. For Mustard horseradish sauce: Whisk together the mayonnaise, mustards, horseradish, sour cream, and salt/pepper in a small bowl.
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Nutrition Facts

Per ServingPer 100 g
Amount Per 1 Serving
Calories 458.53 Kcal (1920 kJ)
Calories from fat 371.49 Kcal
% Daily Value*
Total Fat 41.28g 64%
Cholesterol 68.66mg 23%
Sodium 848.34mg 35%
Potassium 52.32mg 1%
Total Carbs 2.32g 1%
Sugars 1.17g 5%
Dietary Fiber 0.54g 2%
Protein 17.24g 34%
Vitamin C 1.1mg 2%
Iron 0.1mg 1%
Calcium 24.1mg 2%
Amount Per 100 g
Calories 378.58 Kcal (1585 kJ)
Calories from fat 306.72 Kcal
% Daily Value*
Total Fat 34.08g 64%
Cholesterol 56.69mg 23%
Sodium 700.43mg 35%
Potassium 43.2mg 1%
Total Carbs 1.92g 1%
Sugars 0.97g 5%
Dietary Fiber 0.45g 2%
Protein 14.24g 34%
Vitamin C 0.9mg 2%
Iron 0.1mg 1%
Calcium 19.9mg 2%

* Percent Daily Values are based on a 2000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
Find out how many calories should you eat.


  • salty
  • savory
  • bitter
  • sweet
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Recipe Tags

Weightwatchers Points

  • 12.5
  • 12

Good Points

  • saturated fat free

Bad Points

  • High in Sodium

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