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    Home » Recipes » Dinner

    Prime Rib Recipe Slow Roast | Slow-Roasted Bone-In

    Published: Dec 19, 2023 · Modified: Jan 3, 2025 by Genevieve · This post may contain affiliate links · 15 Comments

    Jump to Recipe

    Easy Christmas Prime Rib Recipe Slow is a staple in winter, making it a wonderful Christmas dinner option or Holiday dinner. All you need for this bone-in prime rib recipe slow roast is a good-sized bone-in rib eye roast, fresh thyme leaves, fresh rosemary, Irish Butter, and a good meat thermometer. Make this sinfully delicious Prime Rib dinner tonight and have delicious leftovers all week!

    slow roasted prime rib recipe on a wooden cutting board with fresh rosemary and thyme sprigs this …
    slow roasted prime rib recipes

    This best prime rib recipe slow roast recipe is easy to make and tastes delicious due to cooking this rib roast at a low and slow temperature.

    You can make this slow-roast rib of beef recipe all year long, but it's especially delightful during the Christmas and Holiday seasons. Want more Christmas recipes? Pair this slow roast rib beef recipe with my Mandarin Orange Ginger Cranberry Sauce recipe and my How To Make Pan Fried Ravioli Recipe or try my Christmas Sangria recipe or my DIY Hot Cocoa Gift Set Jar recipe for the ultimate Holiday menu!

    Jump to:
    • 🥩 Ingredients For The Best Slow Roasted Prime Rib
    • 🥩 Instructions For Slow-Roasted Prime Rib
    • Step 4: Preheat the oven to 200 degrees Fahrenheit. (95 degrees C) low temperature
    • 🥩Tips and Tricks to Slow Roast Prime Rib
    • Check Out More Holiday Recipes Below
    • Save This Recipe For Later!
    • 📖 Recipe
    • 💬 Comments

    🥩 Ingredients For The Best Slow Roasted Prime Rib

    a prime rib bone in roast with prime rib seasoning, Kerry Gold Irish Butter, sprigs of fresh rosemary and thyme, with salt and black pepper on a cutting board
    you only need a few ingredients for the perfect prime rib roast!

    What you need for slow roast prime rib recipe for all special occasions

    • Prime Rib Bone In
    • Prime Rib and Roast Seasoning ( I highly recommend this brand)
    • Irish butter (don't go cheap with your butter, use a high-quality grass-fed butter)
    • Fresh thyme
    • Fresh Rosemary
    • Chunky Sea Salt
    • Beef Stock or Beef Broth
    • Plastic Wrap
    • Sheet Pan
    • Meat Thermometer
    • Roasting Pan with a roasting rack

    See full recipe card below for quantities

    The most important item you need for Prime Rib is a good meat thermometer. You can pick one up at your local grocery store or check out my favorite one here.

    Low and slow prime rib is easy, delicious, and fuss-free.

    You will also need a good roasting pan with a roasting rack.

    🥩 Instructions For Slow-Roasted Prime Rib

    a slab of perfectly cooked slab of prime rib with sprigs of fresh rosemary and
    rib of beef slow roast

    Step 1: Season roast generously with kosher salt or chunky sea salt and prime Rib seasoning and add slices of butter all around the rib roast.

    add Irish butter slices all around the rib roast
    adding butter to your prime rib ensure it's juicy and moist and cooks evenly

    Step 2: Cover loosely with plastic wrap and refrigerate, for 4-6 hours or overnight if you have time. Don't wrap the plastic wrap too tight.

    Remove roast from the refrigerator and allow to come to room temperature.
    low and slow prime rib

    Step 3: Remove the roast from the refrigerator and allow the prime rib to come to room temperature on a cutting board

    Step 4: Preheat the oven to 200 degrees Fahrenheit. (95 degrees C) low temperature

    Step 5: In a roasting pan with a wire rack, add sprigs of fresh rosemary, thyme, and beef broth or beef stock to the bottom of the roasting pan. Place the prime rib on top of the wire rack.

    Step 6: Bake roast in the preheated oven until internal temperature reaches 115 degrees F (46 degrees C) for medium-rare, about 3 ½ hours. Remove from the oven and tent with aluminum foil; allow to rest, for about 20 minutes.

    Bake roast in the preheated oven until internal temperature reaches 115 degrees F (46 degrees C) for medium-rare, about 3 ½ hours. Remove from the oven and tent with aluminum foil; allow to rest, about 20 minutes.
    rib of beef slow roast

    Step 7: Meanwhile, increase the oven temperature to 500 degrees F (260 degrees C).

    Let the cooked prime rib rest on the cutting board with sprigs of fresh herbs like rosemary and thyme prime rib recipe slow roast
    slow roasted rib roast prime rib low and slow how to slow cook prime rib prime rib slow cook recipe reverse sear prime rib

    Step 8: Once the oven has come up to temperature, uncover the rested roast and return it to the oven. Bake until well-browned, 6 to 10 minutes. Slice with a sharp knife on the fat side. Serve with creamy horseradish sauce or Au jus sauce from the bottom of the roasting pan and enjoy! Enjoy this easy side dish of Mandarin Orange Ginger Cranberry Sauce

    slice and serve this rich and hearty meat prime rib recipe slow roast
    Slice and serve this easy prime rib recipe to all of your guests! And don't forget the horseradish!

    🥩Tips and Tricks to Slow Roast Prime Rib

    • The general rule of thumb is each pound of the roast is 1-rib. if you get a 5-pound roast, it's going to be five ribs.
    • Each of the ribs will generally make about 2-3 steaks which means you'll have loads of leftover prime rib. 😊
    • Try and pick out a marbled roast, the more marbling, the better because there is more fat.
    • Remove the silver skin on the rib side before roasting to make cutting it easier. Otherwise, you have to fight through that skin when you are cutting between the ribs.

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    Save This Recipe For Later!

    Prime Rib Recipe Slow Roast | Slow-roasted Bone-In

    📖 Recipe

    Prime Rib Recipe Slow Roast | Slow-roasted Bone-In

    Genevieve Jerome
    Easy Christmas Prime Rib Roast is a staple in winter, making it a wonderful Christmas dinner option or Holiday dinner. All you need for this bone-in prime rib recipe slow roast is a good-sized bone-in rib eye roast, fresh thyme leaves, fresh rosemary, Irish Butter, and a good meat thermometer. Make this sinfully delicious Prime Rib dinner tonight and have delicious leftovers all week!
    5 from 85 votes
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    Prep Time 15 minutes mins
    Cook Time 6 hours hrs
    Total Time 6 hours hrs 15 minutes mins
    Course Christmas Dinner
    Cuisine American
    Servings 8 people
    Calories 862 kcal

    Equipment

    • 1 Roasting Rack and Roasting Pan
    • 1 Meat Thermometer

    Ingredients
      

    • 5 pound Prime Rib This should make 5-6 ribs
    • ½ stick of Kerry Gold Irish Butter or type of salted butter
    • ½ cup Prime Rib Rub (see notes if you can only make your own) Paprika, Oregano, Celery, Garlic, Onion, Pepper, Rosemary, and Parsley seasonings.
    • 1 bunch Fresh rosemary
    • 1 bunch Fresh Thyme
    • 32 ounces Beef Broth or Beef Stock
    Get Recipe Ingredients

    Instructions
     

    • Season roast generously with kosher salt and prime Rib seasoning and add slices of butter all around the rib roast.
    • Cover loosely with plastic wrap and refrigerate, for 4-6 hours or overnight if you have time. Don't wrap the plastic wrap too tight.
    • Remove the roast from the refrigerator and allow the prime rib to come to room temperature on a cutting board
    • Preheat the oven to 200 degrees Fahrenheit. (95 degrees C) low temperature
    • In a roasting pan with a wire rack, add sprigs of fresh rosemary, thyme, and beef broth or beef stock to the bottom of the roasting pan. Place the prime rib on top of the wire rack.
    • Bake roast in the preheated oven until internal temperature reaches 115 degrees F (46 degrees C) for medium-rare, about 3 ½ hours. Remove from the oven and tent with aluminum foil; allow to rest, for about 20 minutes.
    • Meanwhile, increase the oven temperature to 500 degrees F (260 degrees C).
    • Once the oven has come up to temperature, uncover the rested roast and return it to the oven. Bake until well-browned, 6 to 10 minutes. Slice with a sharp knife on the fat side. Serve with creamy horseradish sauce or Au jus sauce from the bottom of the roasting pan and enjoy

    Notes

    🥩 Tips and Tricks to Slow Roast Prime Rib
    The general rule of thumb is each pound of the roast is 1-rib. if you get a 5-pound roast, it's going to be five ribs. 
    Each of the ribs will generally make about 2-3 steaks which means you'll have loads of leftover prime rib. 😊
    Try and pick out a marbled roast, the more marbling, the better because there is more fat. 
    Remove the silver skin on the rib side before roasting to make cutting it easier. Otherwise, you have to fight through that skin when you are cutting between the ribs.

    Nutrition

    Serving: 1RibCalories: 862kcalCarbohydrates: 2gProtein: 41gFat: 76gSaturated Fat: 32gPolyunsaturated Fat: 3gMonounsaturated Fat: 33gTrans Fat: 0.003gCholesterol: 172mgSodium: 351mgPotassium: 842mgFiber: 0.1gSugar: 1gVitamin A: 40IUVitamin C: 1mgCalcium: 34mgIron: 4mg
    Tried this recipe? Follow us on InstagramMention @fittyfoodlicious or tag #fittyfoodliciousrecipes!
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    Reader Interactions

    Comments

    1. Suzy

      December 21, 2020 at 11:57 pm

      I always find prime rib to be intimidating but you made this look so easy! Love it!

      Reply
    2. Carrie Robinson

      December 22, 2020 at 12:00 am

      This would be such an impressive dish to make for a holiday dinner! 🙂

      Reply
    3. Beth

      December 22, 2020 at 12:36 am

      Mouthwatering goodness all the way and I agree with you I like it pink.

      Reply
    4. Andrea Metlika

      December 22, 2020 at 1:08 am

      I've always stood clear of prime rib because it is so intimidating. Not anymore. I feel confident I can do this because of this recipe. Yay!

      Reply
    5. Jen

      December 22, 2020 at 7:45 pm

      Great step by step instructions. More butter than I would have expected but so worth all the calories.

      Reply
    6. Noelle

      December 22, 2020 at 8:44 pm

      This was so simple to make and was a great classic recipe! Whole family loved it!

      Reply
    7. nancy

      December 20, 2021 at 1:32 am

      5 stars
      so tender and juicy

      Reply
    8. Jeannie

      December 20, 2021 at 7:04 am

      5 stars
      A must serve this Holiday season! Thanks for your easy recipe.

      Reply
    9. nancy

      December 22, 2021 at 12:12 am

      5 stars
      this prime rib was so juicy and tasty - everyone loved it!

      Reply
    10. Jerika

      December 22, 2021 at 1:52 am

      YUM! I will definitely prepare this Prime Rib on Christmas.:) I love that you added rosemary in it. It's worth the try. Thanks and Happy Holidays.:)

      Reply
    11. Kayla DiMaggio

      December 22, 2021 at 2:16 am

      5 stars
      This prime rib recipe was delicious! We always have it for Christmas eve!

      Reply
    12. Amy Liu Dong

      December 23, 2021 at 1:07 pm

      5 stars
      Wow! The meat looks so tender and delicious. It makes my mouthwatering!

      Reply
    13. Faith Still

      December 24, 2021 at 6:00 pm

      5 stars
      Thanks for sharing. I am going to make it this weekend.

      Reply
    14. Criss

      December 21, 2024 at 6:58 am

      5 stars
      I tried this slow-roasted prime rib recipe, and it turned out amazing! The meat was perfectly tender, and the cooking method made it so easy to get that beautiful result. Will definitely make it again!

      Reply
    15. Lathiya

      December 25, 2024 at 11:28 am

      5 stars
      With the outcome of the recipe, no one believed that the recipe was so easy. Everyone in the family loved this prime rib.

      Reply
    5 from 85 votes (77 ratings without comment)

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