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Easy Medium Rare Oven Roasted Prime Rib

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Few meals make a statement quite like a perfectly cooked prime rib. Juicy, flavorful, and meltingly tender, this roast is the centerpiece of any celebratory table. With a crisp seasoned crust and a warm red center, this easy oven-roasted prime rib comes together with surprisingly little effort and delivers maximum flavor.

Whether it’s a holiday dinner, a special birthday, or just a cold Sunday evening that calls for something indulgent, prime rib cooked medium rare is the way to go. This method ensures your roast is pink and tender throughout, with rich beefy juices that make every bite unforgettable.


Why You’ll Love This Prime Rib

This recipe gives you all the glory of a classic steakhouse prime rib without the complexity. It’s stress-free, oven-baked, and made with just a handful of pantry staples. Plus, there’s no guesswork thanks to a foolproof method for medium rare perfection. The reverse-sear technique guarantees a crusty exterior and a juicy center — no dry meat here!


What Cut of Prime Rib Should I Use?

For best results, go with a bone-in standing rib roast. The bone adds flavor and helps insulate the meat as it cooks. Ask your butcher for a roast with the bones trimmed and tied back on for easy carving. A 5-pound roast typically includes 2 to 3 bones and feeds 6 hungry people.


Ingredients for the Easy Medium Rare Oven Roasted Prime Rib

Prime Rib Roast
This is the star of the show. Choose a bone-in rib roast for that rich, beefy flavor and impressive presentation.

Kosher Salt
Essential for seasoning the meat all the way through. Salt enhances the natural flavors of the beef.

Freshly Ground Black Pepper
Adds a simple but bold bite that balances the richness of the roast.

Garlic Powder
Infuses the roast with aromatic depth without overpowering it.

Fresh Rosemary
Aromatic and woodsy, rosemary brings an herbaceous lift that complements the meat beautifully.

Olive Oil
Helps the seasoning stick and assists in forming that crave-worthy crust.


How To Make the Easy Medium Rare Oven Roasted Prime Rib

Step 1: Prep the Roast

Bring your 5 lb prime rib roast to room temperature by letting it sit out for 2 to 3 hours. This step ensures even cooking.

Step 2: Season Generously

Mix 1 tablespoon kosher salt, 2 teaspoons freshly ground black pepper, 1 teaspoon garlic powder, and 2 tablespoons chopped fresh rosemary in a small bowl. Rub the roast all over with 2 tablespoons olive oil, then coat evenly with the seasoning mix.

Step 3: Slow Roast

Preheat your oven to 250°F (120°C). Place the roast fat side up on a rack in a roasting pan. Roast uncovered for about 3 to 3.5 hours, or until the internal temperature reaches 120°F for medium rare.

Step 4: Rest the Meat

Remove the roast from the oven and tent it loosely with foil. Let it rest for 30 minutes. The internal temperature will continue to rise to the perfect 130°F.

Step 5: Final Sear

Increase oven temperature to 500°F (260°C). Return the roast to the oven for 10 minutes to crisp up the crust. Slice and serve immediately.


How to Serve This Prime Rib Roast

This 5-pound roast serves 6 people generously. Pair it with classic sides like garlic mashed potatoes, roasted vegetables, or horseradish cream. Don’t forget a bold red wine or festive sparkling cider to round it all out.


Best Way to Store Prime Rib Leftovers

Wrap leftover slices tightly in foil or place in an airtight container. Store in the refrigerator for up to 4 days. To reheat without overcooking, wrap slices in foil and warm in a 300°F oven until heated through. You can also freeze leftovers for up to 3 months; just thaw overnight in the fridge before reheating.


Frequently Asked Questions

1. Can I make this ahead of time?
You can season the roast a day ahead and keep it covered in the fridge. Let it come to room temp before roasting.

2. How do I know it’s truly medium rare?
Use a digital meat thermometer. Medium rare is achieved when the internal temp hits 130°F after resting.

3. Do I need to sear it before roasting?
Nope! The reverse sear at the end gives you a crisp crust without overcooking the inside.

4. What should I do with the pan drippings?
Use them for an easy au jus! Deglaze with a splash of red wine or beef broth and simmer until slightly thickened.

5. Can I use dried rosemary instead?
Yes, use 1 tablespoon dried rosemary in place of fresh. Rub it into the roast with the rest of the seasoning.


Want More Dinner Ideas That Impress?

If you loved this oven-roasted prime rib, you’ll definitely want to check out these other savory recipes:


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📌 Save this recipe to your Pinterest dinner board so you can come back to it any time.

And let me know in the comments how yours turned out. Did you go bone-in or boneless? Did you pair it with a bold wine or keep it classic with mashed potatoes?

I love hearing how others make these recipes their own. Questions are welcome too—let’s help each other cook smarter.

For more delicious recipes and kitchen inspiration, follow along on Life With Mira.

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Easy Medium Rare Oven Roasted Prime Rib


  • Author: Mira
  • Total Time: 3 hours 50 minutes
  • Yield: 6 servings

Description

Make a stunning oven-roasted prime rib that’s juicy, flavorful, and cooked to a perfect medium rare with this easy recipe. It’s the ultimate centerpiece for a special dinner or holiday feast. With just a few simple ingredients and foolproof steps, you’ll get steakhouse-level results right from your home oven. Ideal for a cozy Sunday roast, festive gatherings, or when you’re craving a luxurious cut of beef. This recipe fits right into quick dinner ideas, indulgent holiday meals, or easy beef recipes that always impress.


Ingredients

5 lb prime rib roast

1 tablespoon kosher salt

2 teaspoons freshly ground black pepper

1 teaspoon garlic powder

2 tablespoons fresh rosemary, chopped

2 tablespoons olive oil


Instructions

1. Bring your 5 lb prime rib roast to room temperature by letting it sit out for 2 to 3 hours.

2. Mix kosher salt, black pepper, garlic powder, and rosemary in a bowl. Rub roast with olive oil, then coat with seasoning mix.

3. Preheat oven to 250°F (120°C). Place roast fat side up on a rack in a roasting pan. Roast uncovered for 3 to 3.5 hours, or until internal temperature reaches 120°F.

4. Remove from oven and tent loosely with foil. Let rest for 30 minutes to allow the internal temp to rise to 130°F.

5. Increase oven temp to 500°F (260°C). Return roast to oven for 10 minutes to sear the crust. Slice and serve immediately.

Notes

Always let your roast rest before slicing to lock in the juices.

Use a digital meat thermometer for accuracy—don’t guess on doneness.

For added richness, serve with a simple red wine au jus made from pan drippings.

  • Prep Time: 10 minutes
  • Cook Time: 3 hours 40 minutes
  • Category: Dinner
  • Method: Oven Roasted
  • Cuisine: American

Nutrition

  • Serving Size: 1 slice (approx. 8 oz)
  • Calories: 685
  • Sugar: 0g
  • Sodium: 870mg
  • Fat: 58g
  • Saturated Fat: 24g
  • Unsaturated Fat: 30g
  • Trans Fat: 1g
  • Carbohydrates: 1g
  • Fiber: 0g
  • Protein: 39g
  • Cholesterol: 155mg

Keywords: prime rib, medium rare roast, oven prime rib, holiday dinner, easy beef recipe

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