Preheat oven to 275 degrees F (135 degrees C).
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.
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.
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.
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.
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.

Kitchen-Friendly View

Nutrition Facts

Per Serving Per 100 g

Amount Per 1 Serving
Calories	2228.55 Kcal (9330 kJ)
Calories from fat	1722.89 Kcal
		% Daily Value*
Total Fat	191.43g	295%
Cholesterol	448.6mg	150%
Sodium	310.16mg	13%
Potassium	1527.69mg	33%
Total Carbs	35.7g	12%
Sugars	5.27g	21%
Dietary Fiber	3.14g	13%
Protein	77.94g	156%
Vitamin C	7.7mg	13%
Vitamin A	0.6mg	19%
Iron	9.4mg	52%
Calcium	91.4mg	9%

Amount Per 100 g
Calories	301.69 Kcal (1263 kJ)
Calories from fat	233.23 Kcal
		% Daily Value*
Total Fat	25.91g	295%
Cholesterol	60.73mg	150%
Sodium	41.99mg	13%
Potassium	206.81mg	33%
Total Carbs	4.83g	12%
Sugars	0.71g	21%
Dietary Fiber	0.42g	13%
Protein	10.55g	156%
Vitamin C	1mg	13%
Vitamin A	0.1mg	19%
Iron	1.3mg	52%
Calcium	12.4mg	9%

* Percent Daily Values are based on a 2000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
Find out how many calories should you eat.

Tastes

salty
savory
bitter
sweet

Search recipes
by ingredients

Construct & Analyze
Your Recipe

Analyze

Try this similar recipes

Chicken Breasts, Orange Stuffed

Boneless skinless chicken breast halves, Salt, Pepper and 10 more..
Potato Dumpling Casserole

Mashed potatoes, All-purpose flour, Eggs, beaten, Salt and 8 more..
Chicken in Potato Baskets

Frozen hash brown potatoes (thawed ) and 12 more..
Veal Prince Orloff

Tied boneless loin of veal roast, Salt, Black pepper and 28 more..
Curried Lamb Potpie

All-purpose flour, Salt, Unsalted butter, cold; diced and 16 more..
Three Meat Cannelloni Bake

Minced onion, Minced celery, Minced carrot, Olive oil and 21 more..

Recipe Tags

Weightwatchers Points

59.9

Points
60

PointsPlus

Good Points

saturated fat free,
low sodium

Bad Points

High in Total Fat

Also Try

Prime Rib Roast
Chef John's Roast Turkey and Gravy

Kosher salt, Ground black pepper, Poultry seasoning and 16 more..
Cajun Prime Rib Roast

Boneless prime rib roast, Hot pepper sauce, Garlic powder and 2 more..
Restaurant-Style Prime Rib Roast

Roast-ready prime rib roast (ribs cut off and tied to roa... and 7 more..
Kosher Salt Encrusted Prime Rib Roast

Coarse kosher salt, Prime rib roast, Ground black pepper and 1 more..
Prime Rib Our Way

Standing rib roast, fat trimmed and 11 more..
Prime Rib Christmas Special

Bone-in beef prime rib roast and 11 more..
Prime Rib - It's Easier Than You Think

Bone-in beef prime rib roast, Olive oil and 4 more..
Roasted Sweet Potatoes and Vegetables With Thyme and Maple Syrup

Sweet potatoes, cut into long, thin rectangles and 6 more..
Roasted Vegetable and Cornbread Stuffing

Butternut squash, peeled, seeded and diced and 9 more..