Keto Standing Rib Roast with Horseradish Crème

This gorgeous slow-roasted prime rib recipe proves how easy it is to slow-roast a bone-in prime rib to perfection. Garlicky herb butter lends keto-friendly flavor and helps give this centerpiece main course its delicious, crispy crust. Served with homemade horseradish crème on the side, it’s an epic eating event. Note: Salting the beef the day before is key to optimal flavor, so plan in advance.
Serves 8 Serving: 1/8 of a 8 serving recipe

Ingredients List

  • 1 (5-lb) bone-in standing rib roast (prime rib)
  • sea salt and freshly ground black pepper
  • 8 Tbsp (1 stick) butter, softened
  • 5 cloves garlic, mashed or crushed into a paste
  • 1 Tbsp dried Italian herb blend
  • 3/4 cup sour cream
  • 3 Tbsp peeled and freshly grated horseradish or prepared horseradish
  • 1 Tbsp fresh lemon juice
+ Add Recipe to Shopping List


  • The day before you plan to prepare the prime rib, place it on a baking sheet and salt all the meat surface with 4 teaspoons of salt, then refrigerate, uncovered, overnight.
  • The day of cooking, remove the beef from the refrigerator and bring to room temperature, 2 to 3 hours. Pat the beef dry with a paper towel.
  • Preheat oven to 475°F (245°C). Adjust the oven racks so the beef can roast in the middle of the oven.
  • In a small bowl, mix together the butter, garlic, and dried herb blend. Season with 2 teaspoons salt and 1 teaspoon pepper.
  • Slather a layer of about 1/3 of seasoned butter on the underside of the beef (the bone side). Place the beef in a heavy ovenproof skillet or roasting pan, bone side down. Spread another 1/3 of the remaining seasoned butter on the top and sides, reserving the remaining butter for the first baste.
  • Roast for 20 minutes. Reduce the oven temperature down to 275°F (135°C), spread the remaining seasoned butter over the top of the beef, then continue roasting, basting every 30 minutes with pan juices, until the internal temperature is 120°F (50°C) for medium-rare, about 90 minutes. (Start checking the internal temperature early in case it cooks more quickly.)
  • Transfer the beef to a serving platter, cover loosely with foil, and let it rest for 25 to 30 minutes; the internal temperature will rise to 125°F (52°C).
  • Meanwhile, make the horseradish crème: in a medium bowl. Combine the sour cream, horseradish, and lemon juice. Season with 1/2 teaspoon pepper.
  • Slice the beef and serve with the horseradish sauce.


RecipeEric Lundy

PhotographyErin Ng

2 reviews

  1. 5 stars
    We made this for Easter and it was delicious!! Will definitely make again.

  2. 5 stars
    This was Soo delisous. I know!!you all will enjoy this receipt.


Your email address will not be published. Required fields are marked *

Your Rating

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Featured Recipes