Prime Rib Roast

Prime Rib Roast


Cooking prime rib isn’t hard when you can slow roast it on a gas grill . Since the beef roast is the star of your meal, start with the best roast you can find. Then all you need is a simple beef rub and Char-Broil’s® TRU-Infrared™ cooking system to create a juicy, delicious roast fit for a king.

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Beef Rub
tablespoon kosher salt
tablespoon coarse ground black pepper
teaspoon dried minced onion
teaspoon dried minced garlic
teaspoon dried parsley
teaspoon red pepper flake
pound bone-in beef rib roast
tablespoon vegetable oil
quart beef stock
ounce dried porcini mushrooms



Mix together the salt, pepper, onion, garlic, parsley and pepper flakes.


Remove the butcher's twine and lightly coat the roast and ribs with oil.


Season on all sides (including the space between the ribs and roast) with the dry rub. Re-tie the beef roast and ribs back together. Let sit at room temperature for an hour.


Set up your grill for indirect heat and preheat to low (250-300°F).


Place the roast, bone-side down, on a roasting rack and pan combination. Add enough stock to fill the pan about 1 inch deep. Add the dried mushrooms.


Place the roast and pan on the grill on the indirect side where you don't have any burners on. Close the grill lid and cook until the rib roast hits 10 °F less than your desired level of doneness. This should take about 3 hours for medium rare. It's a good idea to turn the roast around every 45 minutes or so. (For rare - pull at internal temperature of 115°F. For medium rare – 125°F. For medium – 135°F).


Remove the roast and pan set up and let rest at room temperature until the internal temperature stops rising - about 20 minutes. Meanwhile, turn up the grill heat to high (500 °F).


Taste the au jus (seasoned broth in the pan) and season with salt and pepper to taste. Keep warm.


Fully remove the rib bones. Place the rib bones cut side down over the heat. Sear the roast 2-3 minutes on the cut side and 1-2 minutes on the other sides.


Remove from the grill. You can let it rest for 5 minutes but it isn't needed - it already settled during the previous rest.


Slice, top with some of the porcini au jus and serve.

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  • BH | Jan 29, 2020

    I wish there was a"print" button,

    This was Helpful (0)
    • Char-Broil | Feb 12, 2020

      There actually is a print button, but it's light blue and positioned all the way over on the right margin. We asked our IT guys to re-position it with all of the social icons to make it easier to find.

      This was Helpful (0)
  • Jennifer | Jun 30, 2020

    I used Bordeaux wine instead of beef stock and seasoned with salt and pepper only. Otherwise followed all of the instructions. It was amazing!!

    This was Helpful (0)
    • Char-Broil | Jul 9, 2020

      Great idea..sounds amazing!

      This was Helpful (0)
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