Dry Aged USDA Prime Rib Roast — Slow Roast & High-Heat Finish

Dry aged USDA Prime rib roast (prime rib) is a centerpiece roast built for holidays and special occasions. This method uses a gentle low-temperature roast for even doneness, followed by a hot blast at the end for a beautifully browned crust.

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🥩 Cut: Dry Aged USDA Prime Rib Roast

This guide works for multi-bone rib roasts. Cooking time will vary with size, so your thermometer is your best tool.

🕒 Time & Difficulty

• Active time: 20–30 minutes
• Total time: 2–4 hours (depending on roast size)
• Difficulty: Moderate

🧂 Ingredients

• 1 dry aged USDA Prime rib roast
• Kosher salt
• Freshly ground black pepper
• Optional: garlic, rosemary, thyme, olive oil or butter for a simple rub

🍽️ Equipment

• Roasting pan with rack (or a sturdy pan)
• Instant-read or probe thermometer

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🔥 Step-by-Step: Rib Roast

1. Season ahead if possible

• For best flavor, season the roast generously with salt and pepper at least 12–24 hours in advance and refrigerate uncovered.
• If cooking same day, season at least 45–60 minutes before roasting.

2. Temper & preheat

• Remove roast from fridge about 1 hour before cooking.
• Preheat oven to 250°F / 120°C.

3. Slow roast

• Place roast fat-side up on a rack in a roasting pan.
• Insert thermometer probe into the thickest part of the meat, avoiding the bone.
• Roast at 250°F until internal temperature reaches:
  • 118–120°F for rare
  • 123–125°F for medium-rare
  • 130°F for medium

4. Rest while you increase oven temp

• Remove roast from oven and let rest 20–30 minutes.
• Increase oven temperature to 475°F / 245°C.

5. High-heat finish

• Return roast to the hot oven for 8–12 minutes, just until the exterior is deeply browned.
• Keep an eye on it — this step happens quickly.

6. Final rest & carving

• Rest another 20 minutes before carving.
• Slice along the bones to remove them as a slab, then slice the roast into thick slices.

This method gives you a rosy, evenly cooked interior with a steakhouse-style crust — perfect for holidays or any big celebration.