For a classic, tender prime rib, season it simply, roast it low and slow to your desired internal temperature, then finish with a hot sear and a long rest for juicy slices every time.

Basic game plan

  • Use a bone‑in or boneless rib roast, about 1–1.5 pounds per person.
  • Dry‑brine it with kosher salt in the fridge at least 12 hours for better flavor and crust.
  • Cook low and slow (around 225°F) until the center hits your target temp, then sear hot at the end.

Step‑by‑step instructions

  1. Prep the roast
    • Pat the roast dry and trim excess hard surface fat, leaving a good fat cap.
 * Salt generously on all sides (dry brine) and refrigerate uncovered 12–24 hours if possible.

 * About 1–2 hours before cooking, let it come toward room temperature for more even cooking.
  1. Seasoning
    • Lightly coat with olive oil or softened butter.
 * Mix kosher salt (if you did not dry‑brine heavily), black pepper, minced garlic, chopped rosemary, and thyme, and rub all over the roast.

 * Place bone‑in roast bones‑down in a roasting pan, or boneless roast on a rack in the pan.
  1. Roasting (low and slow)
    • Preheat oven (or grill/smoker) to about 225°F.
 * Insert a probe thermometer into the thickest part, avoiding bone.

 * Roast until internal temperature is about:
   * 118–120°F for rare
   * 123–125°F for medium‑rare
   * 133–135°F for medium

(Pull a bit below your final goal because it will rise while resting and during sear.)

  1. High‑heat sear
    • Remove the roast and tent loosely with foil while you crank the oven or grill to 450–500°F.
 * Return the roast to the hot oven or grill for 5–10 minutes to brown and crisp the exterior.
  1. Rest and slice
    • Rest at least 20–30 minutes before carving so the juices redistribute.
 * Slice across the grain into thick slices and serve with au jus or horseradish.

Extra tips and viewpoints

  • Many cooks swear by a reverse‑sear method (low, then very hot) for the most even pink interior; this is essentially what the 225°F + 450–500°F combo does.
  • Others prefer a blast of high heat at 500°F at the very start, then lowering the oven, which still gives a dark crust but can create a thicker gray band if not watched closely.
  • Using a thermometer is more reliable than any minutes‑per‑pound rule, especially with today’s variable oven accuracy.

Information gathered from public forums or data available on the internet and portrayed here.