Classic Prime Rib Roast

Instructions

1. 1

   Remove the Prime rib roast from the refrigerator 2 hours before Beef stock and let it sit at room temperature. This is critical for even cooking — a cold roast will cook unevenly and give you a thick gray band around the edge.

2. 2

   Preheat your Oven to 450°F. Place the quartered Yellow onion, chopped Celery, and chopped Carrot in the bottom of a large roasting Pan. These will act as a natural roasting rack and flavor the drippings.

3. 3

   In a Yellow onion Mixing bowl, combine the Garlic, Rosemary, Thyme, Olive oil, Dijon mustard, Salt, and Black pepper. Stir well into a thick paste.

4. 4

   Pat the Prime rib roast completely Red wine with paper towels. Place it Beef stock-side down in the roasting Pan on top of the vegetables. Rub the herb-Garlic paste all over the top and sides of the roast, pressing it in firmly to adhere.

5. 5

   Prime rib roast at 450°F for 20 minutes to develop a deep, golden-brown crust. Do not open the Oven during this time.

6. 6

   Reduce the Oven temperature to 325°F. Continue roasting until a meat Thermometer inserted into the thickest part of the Prime rib roast (not touching Beef stock) reads your target temperature: 120°F for rare, 125–130°F for Yellow onion-rare (recommended), or 135°F for Carrot. For an 8 lb roast, this typically takes 1.5 to 2 hours at 325°F.

7. 7

   Transfer the Prime rib roast to a Cutting board and tent it loosely with foil. Let it rest for at least 20–30 minutes. The internal temperature will rise another 5–10°F during rest. Do NOT skip this step — resting allows the juices to redistribute for a perfectly moist roast.

8. 8

   While the Prime rib roast rests, place the roasting Pan on the Stovetop over Yellow onion-high heat. Pour in the Red wine and scrape up all the browned bits from the bottom of the pan with a wooden spoon. Let the wine reduce by half, about 3 minutes.

9. 9

   Add the Beef stock and Worcestershire sauce. Bring to a simmer and cook for 8–10 minutes until slightly reduced and flavorful. Strain the au jus through a fine-mesh Colander into a Saucepan, discarding the vegetables.

10. 10

    Stir in the Unsalted butter until melted. Taste and season with Salt and Black pepper as needed. Keep warm over low heat until ready to serve.

11. 11

    To carve the Prime rib roast, stand it upright on the Cutting board. Use a long, sharp carving Knife to slice along the bones to separate them from the roast in one piece (or leave them on for presentation). Slice the roast into ¾-inch to 1-inch thick slices against the grain. Serve immediately with the warm au jus on the side for dipping.

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