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Serve your 500 rule prime rib with au jus or a creamy horseradish sauce.
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Perfect Prime Rib Recipe (500 Rule/Closed Oven Method)

Back when I first tried my hand at making prime rib, I did a LOT of research to find the perfect prime rib recipe. This is the foolproof method I ended up using, and I’ve been making it every Christmas ever since!
Course Main Course
Cuisine American
Prep Time 5 minutes
Cook Time 2 hours 6 minutes
Total Time 2 hours 11 minutes
Servings 8
Calories 595kcal
Author Jill Nystul
Cost $120

Equipment

  • Roasting rack
  • Roasting pan
  • Oven-safe meat thermometer

Ingredients

  • 5 lb prime rib roast
  • 4 tsp onion salt
  • 4 tsp seasoned salt
  • 4 tsp garlic powder

Instructions

  • Mix up 1 tablespoon + 1 teaspoon each of onion salt, seasoned salt, and garlic powder, for a total of 1/4 cup of seasoning mix.
    There's no such thing as a bad prime rib, especially when you learn to cook it at 500 degrees.
  • Pat the seasoning mix on both ends of the roast as well as the fat side. (The salt may not stick as well on the fat side, but don’t worry about it.)
    Perfect prime rib roast begins with the seasoning.
  • Set the seasoned roast on a roasting rack, bone-side down and fat-side up. Place the rack in a large roasting pan, and insert your meat thermometer into the middle of the roast.
    Set the roast on a rack in a roasting pan and put it in a preheated 500 degree oven.
  • Place the roast into a 500° preheated oven, uncovered, and cook for 5-6 minutes per pound.
    Put the prime rib in a preheated 500 degree oven, uncovered and cook for 5 - 6 minutes per pound.
  • Then shut the oven off completely, and DO NOT OPEN THE OVEN DOOR FOR TWO HOURS. 
    After the initial cooking, turn the oven off and do NOT open the oven door until the meat reaches the perfect temperature.
  • After two hours, check the temperature of the meat. If your thermometer reads 135-140°F, it’s done! (If it isn't quite to temp yet, just put it back in the oven at 375°F until it's done.)
    Check the temperature of the prime rib before removing it from the oven.

Creamy Horseradish Sauce

  • Whisk 1 cup heavy cream in a mixing bowl until it forms stiff peaks.
    I make my creamy horseradish sauce with whipped cream.
  • Season with the white pepper to taste, 3 tablespoons prepared horseradish, and a dash of hot sauce (optional.) Stir gently until just combined, and serve alongside your delicious prime rib!
    Serve your 500 rule prime rib with au jus or a creamy horseradish sauce.

Nutrition

Calories: 595kcal | Carbohydrates: 1g | Protein: 57g | Fat: 40g | Saturated Fat: 18g | Cholesterol: 173mg | Sodium: 2474mg | Potassium: 778mg | Fiber: 1g | Sugar: 1g | Vitamin A: 43IU | Calcium: 20mg | Iron: 5mg