Last Updated on September 27, 2023
If you’ve ever been to a Costco, you know that there’s no shortage of delicious food items to choose from. One of their most popular offerings is the prime rib roast, and it’s easy to see why. This cut of meat is juicy, tender, and full of flavor.
Keep reading to find out how to make your own delicious prime rib roast from the comfort of your own kitchen. Follow the step-by-step instructions for the perfect selection of ingredients and measurements.
What is Costco Prime Rib?
Costco prime rib is a cut of beef roast that comes from the same area as the ribeye steak. It has a fatty cap around the top, which helps to keep it moist and juicy while roasting. Costco sells bone-in prime rib roasts, making them easier to carve and providing more flavor.
The cuts are usually between 5 and 7 pounds, so they are perfect for a large family gathering. The beauty of prime rib is that it is incredibly simple to make.
All you need is the right ingredients and some patience, and you’ll have a meal that will impress any crowd! With a few simple steps, anyone can make this delicious roast with ease.
Why You’ll Love this Costco Prime Rib?
This Costco Prime Rib is sure to please. The combination of rich flavors and the juicy, tender texture makes it an ideal dinner for any special occasion. Not only is it delicious, but also you don’t need to spend hours in the kitchen prepping and cooking.
Simply combine your ingredients and follow a few simple steps and you’ll have a roast that everyone will love. The prime rib roast is also incredibly versatile.
Whether you serve it as a main course or slice it for sandwiches, this dish will quickly become a crowd favorite. The key to making the perfect roast is to choose quality ingredients and cook it low and slow, which allows all of the flavors to come together perfectly.
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The Ingredients
- Prime rib roast: This cut of meat is one of the most flavorful and tender cuts, thanks to the layer of fat that runs over it.
- Kosher salt: Kosher salt has a much larger grain than regular table salt, which will help give your roast added flavor.
- Black pepper: Adding black pepper to your prime rib gives it a spicy kick and brings out all the other flavors.
- Fresh thyme leaves: Thyme adds a subtle hint of flavor to your prime rib that will make it stand out from the rest.
- Garlic cloves, minced: The garlic in this recipe helps create an herbaceous and savory base for the other flavors to shine through.
- Olive oil: Olive oil helps keep the prime rib moist and juicy as it cooks.
- Fresh rosemary leaves, minced: Rosemary has a robust flavor that pairs perfectly with the other ingredients in this recipe. It will give your roast an earthy aroma and taste.
Step-by-Step Instructions
Step 1
Preheat your oven to 425°F (220°C).
Step 2
Place the prime rib in a roasting pan and sprinkle with the kosher salt, black pepper, thyme leaves, garlic cloves, olive oil, and rosemary. Rub the seasonings into all sides of the roast.
Step 3
Place the roast in the preheated oven and roast for 15 minutes. After 15 minutes, reduce the heat to 350°F (180°C) and continue to cook for 1 hour and 30 minutes.
Step 4
Once the prime rib has cooked for 1 hour and 30 minutes, remove it from the oven and let it rest for 10-15 minutes before slicing.
Notes
- For a crispier crust, you can increase the oven temperature to 500°F (260°C) for the first 15 minutes of cooking.
- You may need to adjust the roasting time depending on your oven and the size of your roast. Use a meat thermometer to check that it has reached an internal temperature of 145°F.
- To ensure that the roast is perfectly cooked, use a thermometer to check that the internal temperature of the meat has reached 140°F (60°C) for medium-rare or 150°F (65°C) for medium.
- If you want your prime rib served with gravy, you can make an easy pan sauce by adding 2 cups of beef stock to the roasting pan after removing the roast. Simmer on low heat until it reduces by half, then strain and serve.
Nutrition Information
How to store Costco Prime Rib?
Once cooled, the prime rib should be stored in an airtight container or bag. It will stay good for up to 5 days in the refrigerator and can also be frozen for up to two months.
To reheat, simply slice it thinly and bake at 350°F (180°C) until it reaches an internal temperature of 145°F (63°C).
Variations
Here are a few ideas to change up this recipe:
- Add some butter for an extra-rich flavor.
- Swap out different herbs and spices, such as oregano or cumin, for the thyme and rosemary.
- Try using other liquids instead of olive oil, such as balsamic vinegar or red wine.
- Season the roast with a dry rub for an extra punch of flavor.
Equipment
- Baking dish
Ingredients
- 2 5-pound bone-in prime rib roast
- 1 tablespoon of kosher salt
- 2 teaspoons black pepper
- 6 teaspoons fresh thyme leaves minced
- 7 garlic cloves minced
- 2 tablespoons olive oil
- 6 teaspoons fresh rosemary leaves minced.
Instructions
- Heat your oven to 425°F (220°C).
- Coat the prime rib in a mixture of kosher salt, black pepper, thyme leaves, garlic cloves, olive oil, and rosemary. Make sure all sides are evenly covered with this blend of seasonings.
- Place the roast in the preheated oven for 15 minutes and then reduce the heat to 350°F (180°C). Roast the prime rib for an additional 1 hour and 30 minutes.
- After roasting, take the prime rib out of the oven and let it rest for 10-15 minutes. Once cooled enough, slice and serve.
Notes
- For a crispier crust, you can increase the oven temperature to 500°F (260°C) for the first 15 minutes of cooking.
- You may need to adjust the roasting time depending on your oven and the size of your roast. Use a meat thermometer to check that it has reached an internal temperature of 145°F.
- To ensure that the roast is perfectly cooked, use a thermometer to check that the internal temperature of the meat has reached 140°F (60°C) for medium-rare or 150°F (65°C) for medium.
- If you want your prime rib served with gravy, you can make an easy pan sauce by adding 2 cups of beef stock to the roasting pan after removing the roast. Simmer on low heat until it reduces by half, then strain and serve.
Nutrition
FAQs
What is the best way to cook a Costco Prime Rib?
A: The key to making a perfect prime rib is to cook it low and slow. Preheat your oven to 425°F (220°C), season the roast with salt, pepper, thyme, garlic cloves, olive oil, and rosemary leaves; then lower the heat to 350 °F (180°C) and cook for 1 hour and 30 minutes.
Can I make this without an oven?
Yes, you can make this with a slow cooker. Simply season the roast as above and set it in the slow cooker on low for 8-10 hours, or until the internal temperature reaches 145°F (63°C).
Is this safe for kids?
Yes, this Costco Prime Rib is safe for kids. The seasonings in the recipe are mild and the roast is cooked low and slow to ensure it reaches a safe temperature. It is also full of nutrients, making it a great meal choice for your family.
Wrapping Up
Thank you for reading this article. I hope you found it helpful and are now ready to make your own Costco Prime Rib.
Remember, the key is to choose quality ingredients, cook it low and slow, and take your time when seasoning.
With a few simple steps, you can have a delicious roast that will impress any crowd! Please share this article with your friends and family if you found it helpful.
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Lori Walker is a passionate dietitian and food lover. She offers simple and nutritious recipes that don't take long to cook. In addition to sharing delicious dishes, she also shares useful advice on saving time and money in the kitchen. She believes that with a bit of creativity, anyone can make healthy meals that won't break the bank. Read more
