Ingredients
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1 (4.5 pound) beef prime rib roast at room temperature
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coarse sea salt, or as needed
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freshly ground black pepper, or as needed
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1 onion, quartered
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¼ cup unsalted butter
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¼ cup all-purpose flour
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¼ cup red wine
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1 (32 ounce) carton beef stock
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4 sprigs fresh thyme
Directions
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Preheat oven to 275 degrees F (135 degrees C).
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Rub beef roast with sea salt and black pepper. Heat a large cast-iron skillet over medium-high heat; sear roast on all sides in the hot skillet, 2 to 3 minutes per side. Turn roast so the ribs and fat side are facing up.
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Roast prime rib in the preheated oven for 45 minutes; scatter onion quarters around roast and continue cooking until an instant-read meat thermometer inserted into the thickest part of the meat reads 130 degrees F (54 degrees C) for rare, about 2 more hours.
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Remove roast from skillet, wrap meat in aluminum foil, and let rest for 15 to 20 minutes to let juices reabsorb into the meat. Leave onion pieces in skillet.
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Pour drippings from skillet into a bowl and skim off excess grease. Return degreased drippings to skillet with onion pieces, place over medium heat, and melt butter in the drippings. Whisk flour into mixture to make a paste, 1 to 2 minutes. Stir red wine into flour paste until smooth. Mix beef stock into pan gravy until smooth; stir thyme sprigs into gravy.
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Reduce heat to low and simmer gravy until thickened, 5 to 8 minutes. Strain gravy, discard onion pieces and thyme, and serve with prime rib.
Nutrition Facts (per serving)
| 562 | Calories |
| 45g | Fat |
| 8g | Carbs |
| 28g | Protein |
| Nutrition Facts | |
|---|---|
| Servings Per Recipe 8 | |
| Calories 562 | |
| % Daily Value * | |
| Total Fat 45g | 58% |
| Saturated Fat 20g | 100% |
| Cholesterol 110mg | 37% |
| Sodium 558mg | 24% |
| Total Carbohydrate 8g | 3% |
| Dietary Fiber 1g | 4% |
| Total Sugars 3g | |
| Protein 28g | 55% |
| Vitamin C 10mg | 11% |
| Calcium 33mg | 3% |
| Iron 8mg | 47% |
| Potassium 478mg | 10% |
* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
** Nutrient information is not available for all ingredients. Amount is based on available nutrient data.
(-) Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.
