Ingredients
Directions 8 steps | 400 Minutes
Heat a large sous vide water bath to 132°F. Season the prime rib liberally with kosher salt and freshly ground black pepper.
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Place the seasoned prime rib in a vacuum sealer bag. Use a vacuum sealer to remove the air and seal the bag.
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Submerge the vacuum-sealed prime rib into the sous vide water bath. Let the cook for 6-8 hours.
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When ready, preheat the oven to 500°F and remove the vacuum-sealed bag from the water and extract the prime rib. Reserve the cooking liquid in the bag. Use paper towels to pat the prime rib dry.
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Place the prime rib in a roasting pan and roast in the preheated oven until the exterior is seared and well browned, about 10 minutes.
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While the prime rib is roasting, prepare the au jus. In a saucepan, combine the butter and minced shallots. Cook until the shallots have softened.
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Whisk the cornstarch into the low sodium beef stock and add it to the saucepan along with the reserved cooking liquid. Bring to a boil and reduce to a simmer until the au jus reduces. Skim off any foam. If needed, season to taste.
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Let the sous vide prime rib rest for 5-10 minutes before slicing and serving along with the au jus. If serving on a large plate, garnish with sprigs of rosemary and serve alongside roast potatoes. Enjoy!
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Notes:
- Boneless prime rib roast can be used but bone-in prime rib has more flavor.
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