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Perfect Prime Rib Roast Oven: Restaurant-Quality Results at Home

Perfectly tender, juicy prime rib roast cooked in the oven with a beautifully caramelized crust and melt-in-your-mouth texture—ideal for holidays and elegant dinners.
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Servings: 8 servings
Course: Main Course
Cuisine: American
Calories: 325
Ingredients Method Notes

Ingredients
  

  • 1 4–5 lb bone-in or boneless prime rib roast
  • 2 tbsp olive oil or softened butter
  • 1 tbsp kosher salt
  • 1 tbsp freshly cracked black pepper
  • 2 tsp garlic powder or 4 fresh garlic cloves, halved
  • 1 tsp onion powder
  • 1 tbsp fresh rosemary or thyme optional
  • 1 onion sliced (optional)
  • Beef broth or red wine optional, for deglazing and au jus

Method
 

  1. Remove the roast from the refrigerator 1–2 hours before cooking to reach room temperature. Pat completely dry with paper towels. Preheat oven to 450°F (230°C).
  2. Combine salt, pepper, garlic powder, onion powder, and herbs. Rub the roast with olive oil or butter, then coat evenly with the seasoning mixture.
  3. Place roast on a rack in a roasting pan, fat side up. Add sliced onions underneath if desired.
  4. Roast at 450°F for 20 minutes to sear and develop a golden crust.
  5. Reduce oven temperature to 325°F (165°C). Insert a meat thermometer into the thickest part of the roast.
  6. Continue roasting until internal temperature reaches 120–125°F for rare, 130°F for medium-rare, or 135–140°F for medium. Remove 5–10 degrees before target temperature for carryover cooking.
  7. Transfer to a cutting board and tent loosely with foil. Rest 25–30 minutes for juices to redistribute.
  8. Carve along bones (if bone-in) and slice against the grain into ½–1 inch slices. Serve with au jus or horseradish sauce.

Notes

Always let the roast rest before carving to retain juices. Use a meat thermometer for precision. Save pan drippings for au jus or gravy. Remove the roast 5–10°F before desired doneness to prevent overcooking.