How to cook a 7 lb rib roast

A garlic-crusted Prime Rib Recipe with a trusted method for juicy, melt-in-your-mouth tender prime rib roast. Watch the video tutorial and learn how to trim, tie, wrestle (kidding), and cook a standing rib roast.

How to cook a 7 lb rib roast

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Repeat after me, “prime rib is not scary.” It’s actually very simple to prepare. Prime Rib Roast can be intimidating because it is an expensive cut of beef and is usually made for important life events or holidays, but really, this is not hard to make.

The secrets to a great prime rib are (1) a meat thermometer and (2) a trusted method. TA-DA!! 🙂 Prime rib pairs really well with creamy mashed potatoes and baked asparagus for the ultimate holiday feast. And don’t forget the Creamy Horseradish Sauce! 

What Cut is Prime Rib Meat?

There are 2 grades of prime rib at the grocery store; prime grade and choice grade. Prime grade has more fat and marbling and can be considerably more expensive per pound. Ask your butcher whether your roast is prime or choice because it isn’t always clear on the packaging and most cuts sold are actually “choice”. This recipe works for either prime or choice, so go with the best you can buy.

Look for Bone-in prime rib, also known as a “Standing Rib Roast.” We used a 7 lb bone-in Beef Prime Rib, but you can use larger or smaller roasts and modify the baking time per the “Prime Rib Cooking Time” chart below.

How to cook a 7 lb rib roast

We included our Amazon affiliate links below for tools to make prime prime.

How to Carve and Tie Prime Rib Roast:

Pre-cutting the bones away is completely optional but will make carving easier when ready to serve. It’s best to do it ahead than struggle with it in front of company. Removing and re-attaching the ribs with string doesn’t change the juiciness of the roast at all.

Cut away the bones and tightly tie them right back onto your roast with kitchen string, looping the string around in 1″ intervals. A butcher can cut away the ribs and tie the roast for you (usually free of charge).

How to cook a 7 lb rib roast

Garlic and Herb Prime Rib Rub:

Stir together: 6 finely chopped garlic cloves, 1/2 Tbsp salt, 1/2 Tbsp black pepper, 1 tsp chopped fresh rosemary leaves, 1/2 tsp chopped fresh thyme leaves and 3 Tbsp olive oil. Note: Do not use a garlic press as pressed garlic burns under high heat.

How to cook a 7 lb rib roast

How to Cook Prime Rib:

1. Sprinkle meat all over with about 2 tsp salt, cover loosely with plastic wrap and let it rest on the counter for 3 hours to come to room temperature. The roast will bake more uniformly if it is near room temperature. When nearly at room temperature, Preheat Oven to 500˚F with rack in the lower third of the oven.

How to cook a 7 lb rib roast

3. Pat the roast dry with paper towels then rub all over the top and sides with prime rib rub. Place into a roasting pan, rib-side-down. Put an oven-safe meat thermometer into the thickest portion of the meat and cook according to the Cooking Time Chart Below.

How to cook a 7 lb rib roast

4. Once out of the oven transfer to a cutting board, tent loosely with foil and rest 30 minutes before carving. If you don’t rest the roast, it will juice out and become chewy. Remove the kitchen string and use a carving knife to slice against the grain to desired thickness

How to cook a 7 lb rib roast

Prime Rib Cooking Time:

Bake in a fully pre-heated oven at 500˚F for 15 minutes. Reduce heat to 325˚F and continue baking:

  • 10-12 min per pound for rare
  • 13-14 min per pound for medium rare
  • 14-15 min per pound for medium
  • 16-17 min per pound for medium well

Roast until the thermometer registers:

  • 115-120˚F for rare,
  • 125-130˚F for medium rare
  • 135-140 for medium doneness
  • 145-150 for medium well

My 7 lb roast baked at 500˚F for 15 minutes then at 325˚F for 1 hr 30 minutes for medium doneness.

Notes on Cooking Prime Rib Roast:

A colder or thicker roast will take more time to cook and oven strengths can vary so a meat thermometer is ultra important.

The internal temp of the roast will continue to rise 5-10 degrees even after it’s out of the oven so don’t over-bake it. You can put it back in the oven if you want it more done.

How to cook a 7 lb rib roast

The garlic crust and initial roasting over high heat seals in the juices and makes every bite so tender and flavorful.

Watch Natasha Make Prime Rib:

I hope you are super pumped to make your own prime rib roast after watching this!

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Prime Rib Recipe

Prep Time: 15 minutes

Cook Time: 1 hour 45 minutes

Total Time: 2 hours

How to cook a 7 lb rib roast

A garlic-crusted Prime Rib Recipe with a trusted method for juicy, melt-in-your-mouth tender prime rib roast. How to trim, tie and cook a standing rib roast.

Natasha Kravchuk

Skill Level: Easy

Cost to Make: $ varies by grade and size

Keyword: prime rib, prime rib recipe

Cuisine: American

Course: Main Course

Calories: 822

Servings: 12 people, each rib yields about 3 servings 4 ribs or 12 servings

For the Roast:

  • 7 lb beef prime rib (bone-in), boned and tied
  • 3 1/2 tsp sea salt, divided
  • 1/2 Tbsp black pepper, freshly ground
  • 1 tsp fresh rosemary leaves, minced, from 1 sprig or 1/2 tsp dried rosemary
  • 1/2 tsp fresh thyme leaves, mnced, from 1-2 sprigs, or 1/4 tsp dried thyme
  • 6 garlic cloves, finely chopped
  • 3 Tbsp olive oil

How to Make Prime Rib:

  1. Sprinkle meat all over with 2 tsp salt, cover loosely with plastic wrap and let it rest at room temperature for 3 hours to come to room temperature (it will bake more uniformly). Then preheat Oven to 500˚F with rack in the lower third of the oven.

  2. Make your Prime Rib rub: In a small bowl, stir together: 1/2 Tbsp salt, 1/2 Tbsp black pepper, 1 tsp minced rosemary, 1/2 tsp minced thyme leaves, chopped garlic, and 3 Tbsp olive oil.

  3. Lightly pat the roast dry with a paper towel then rub all over top and sides with garlic rub. Place into a roasting pan bone-side-down and put a meat thermometer into the thickest portion of the meat. Bake at 500˚F for 15 minutes.

  4. Reduce heat to 325˚F and continue baking following these guidelines: 10-12 min per pound for rare, or 13-14 min per pound for medium rare, and 14-15 min per pound for medium. Roast until the thermometer registers: 120˚F for rare, 130˚F for medium rare, 140 for Medium, 150 for medium well.* This 7 lb roast baked at 500˚F for 15 minutes then at 325˚F for 1 hr 30 minutes for medium doneness.

  5. Transfer to a cutting board, tent loosely with foil and rest 30 minutes before carving. Remove string and rack of ribs then slice to desired thickness.

*Meat internal temp will continue to rise 5-10 degrees even after it's out of the oven so don't over-bake.

Nutrition Facts

Prime Rib Recipe

Amount Per Serving

Calories 822 Calories from Fat 657

% Daily Value*

Fat 73g112%

Saturated Fat 29g181%

Cholesterol 160mg53%

Sodium 796mg35%

Potassium 593mg17%

Protein 36g72%

Vitamin C 0.5mg1%

Calcium 24mg2%

Iron 3.9mg22%

* Percent Daily Values are based on a 2000 calorie diet.

If you make this recipe, I’d love to see pics of your creations on Instagram, Facebook and Twitter! Hashtag them #natashaskitchen

I learned to make prime rib from my blogging friend, Elise of Simply Recipes and I am using her method for prepping and roasting.

We always have prime rib at Christmas dinner (and sometimes we go all out and make turkey also!) If this recipe graces your holiday table, I hope you tag your photos with #natashaskitchen so I can see your beautiful creations.

What is the star of your holiday table? I’d love to hear about your traditions in a comment below.

Natasha Kravchuk

How to cook a 7 lb rib roast

Welcome to my kitchen! I am Natasha, the blogger behind Natasha's Kitchen (since 2009). My husband and I run this blog together and share only our best, family approved and tested recipes with YOU. Thanks for stopping by! We are so happy you're here.

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How long does it take to cook 7 pounds of prime rib?

Start by cooking your prime rib at 500°F for 15 minutes and then lower the oven temperature to 325° F and cook for 10-12 min per pound for rare prime rib, or 13-14 min per pound for medium rare prime rib, or 14-15 min per pound for medium well prime rib.

How long does it take to cook a 7 pound roast?

Common Names.

How long does it take to cook a 7 pound prime rib at 325?

7-Pound Roast Roast at 450 degrees F for 15 minutes; then roast at 325 degrees F for 1 hours 45 minutes. Roast at 450 degrees F for 15 minutes; then roast at 325 degrees F for 2 hours 20 minutes.

How many people will a 7 pound prime rib roast feed?

ESTIMATING YOUR ROAST.