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Rotisserie Prime Rib on a Gas Grill: Holiday Roast
Rotisserie Prime Rib on a Gas Grill: Why It Works
Rotisserie prime rib on a gas grill is one of those special-occasion meals that looks like it requires a professional kitchen, but with the Lion L90000 and its included rotisserie kit, it is genuinely achievable in your own backyard. The rotisserie spit slowly turns the roast over indirect heat, basting it continuously in its own rich juices so every slice stays moist and the outside develops a deep, golden crust without constant attention. Whether you are cooking for a holiday dinner, a family gathering, or any night that deserves something extraordinary, this is the Lion grill rotisserie recipe that earns a standing ovation every single time.
Why the Lion Rotisserie Kit Makes the Best Prime Rib
The included Lion rotisserie kit: stainless steel spit rod, two forks, and motor, part of the free Gourmet Package!
Most ovens roast prime rib from one direction, which means the bottom sits in drippings while the top dries out unevenly. The Lion rotisserie kit solves this completely. As the spit turns, gravity pulls the juices around the entire surface of the roast in a continuous self-basting cycle, keeping every part of the meat evenly moist while the outside slowly browns to a deep, mahogany crust.
The included 15,000 BTU infrared rotisserie back burner on the Lion L90000 provides steady, radiant heat from behind the spinning roast. This is different from cooking over a direct flame. The infrared heat envelops the meat evenly as it turns, giving you consistent browning across the entire surface without any hot spots or flare-ups.
What makes this Lion grill rotisserie recipe even more compelling is what comes with the grill. The Lion L90000 includes the rotisserie kit as part of the free Gourmet Package, a $360 value that also includes the smoker box, griddle, grill cover, and griddle remover with bottle opener. You do not need to buy any additional accessories to cook this recipe. Everything is already there when the grill arrives.
The Lion L90000 and L75000 grills include a free Gourmet Package ($360 value): rotisserie kit, smoker box, griddle, grill cover, and griddle remover with bottle opener. Everything you need to cook this recipe is already included. Note: the L60000 model does not include the Gourmet Package.
How to Cook Prime Rib on a Rotisserie, Step by Step
Learning how to cook prime rib on a rotisserie is one of the most rewarding things you can do with the included Lion rotisserie kit. This recipe uses a low-and-slow indirect method with the infrared back burner for a perfect finish. Go by temperature, not the clock.
What You Will Need
The Cooking Steps
Take your time with the dry brine and setup phases. The patience you put in before the roast hits the grill is what separates a good prime rib from a truly exceptional one.
- 1 Dry brine the roast. At least 1 hour before cooking (up to 24 hours for maximum flavor), generously coat the entire roast with kosher salt and place it uncovered on a wire rack in the refrigerator. This draws out surface moisture, dries the exterior, and seasons the meat deeply. Remove the roast 1 hour before cooking to bring it closer to room temperature.
- 2 Apply the herb rub. Mix the minced garlic, chopped rosemary, thyme, black pepper, and olive oil into a paste. Pat the roast completely dry with paper towels, then coat the entire exterior generously with the herb rub. Press it in firmly so it adheres to the surface.
- 3 Truss and skewer the roast. Use butcher's twine to tie the roast into a compact, even cylinder so it spins smoothly and cooks evenly on the spit. Slide the Lion rotisserie spit rod through the center of the roast lengthwise, finding the balance point where the weight distributes evenly. Secure both rotisserie forks firmly into the meat and tighten the lock screws.
- 4 Set up the Lion L90000 for rotisserie. Place a drip pan on the cooking grates directly below where the roast will spin, to catch all the drippings. Turn the outer burners on to medium and leave the center burners off. Turn on the infrared rotisserie back burner and let the grill preheat to 300 to 350 degrees Fahrenheit. Attach the spit rod to the rotisserie motor brackets and switch on the motor.
- 5 Roast low and slow. Close the lid and let the roast spin. For a 4 to 6 pound roast, plan for approximately 3 hours. For a 6 to 10 pound roast, plan for 4 to 4.5 hours. These are approximations only. Always go by temperature, not time. Check the internal temperature after the first hour, then every 30 minutes as it approaches your target.
- 6 Pull at the right temperature. Insert the meat thermometer into the thickest part of the roast, away from the bone. For medium-rare, remove the roast from the grill when the internal temperature reaches 120 to 125 degrees Fahrenheit. Carryover cooking during the rest will bring it up to a perfect 130 to 135 degrees Fahrenheit medium-rare.
- 7 Rest before carving. Remove the spit from the grill and let the roast rest on the spit for 20 to 30 minutes before removing it and carving. This is longer than a steak rest because of the roast's size. The juices need time to redistribute fully. Do not skip this step. Slice and serve with the drippings from the pan as au jus or the base for a gravy.
A quick safety note: The USDA recommends cooking beef roasts to a minimum internal temperature of 145 degrees Fahrenheit with a 3-minute rest for food safety. Medium-rare at 130 to 135 degrees Fahrenheit is below this threshold. Cook to the doneness level you are comfortable with, and always use a meat thermometer rather than relying on color or time alone.
The Secret to a Self-Basting Rotisserie Roast
The self-basting rotisserie roast is the whole point of this method. As the spit turns, the fat cap on the top of the roast melts and runs down over the entire surface continuously, keeping the meat moist and adding flavor with every rotation. Here are the tips that make this technique work every time.
- Always use a drip pan. Place it on the grates directly below the roast to catch every drop of dripping. These drippings become incredibly flavorful au jus that you can spoon over the sliced meat or use as the base for a pan sauce. Never let them fall onto the burners and cause flare-ups.
- Balance the roast on the spit. An unbalanced roast wobbles as it spins, which puts strain on the motor and leads to uneven cooking. Before you fire up the grill, hold the spit horizontally and let it roll freely in your hands. It should rotate smoothly without one side dropping. Adjust the position of the forks until it balances.
- Trust your thermometer, not the clock. Every roast is different in size, fat distribution, and starting temperature. Cook times are estimates only. The pull temperature of 120 to 125 degrees Fahrenheit is the number that matters. Start checking after the first 90 minutes and monitor from there.
- Keep the lid closed. Every time you open the lid you drop the internal temperature and release the built-up heat and moisture. Use an instant-read thermometer quickly when checking and close the lid immediately.
- Add the smoker box for a wood-fired twist. Fill the included Lion smoker box with oak or hickory wood chips and place it on the grates next to the lit burner before you start. The light smoke flavor that builds during the long cook adds a subtle depth that pairs beautifully with the herb crust on the prime rib.
Why This Lion Grill Rotisserie Recipe Works
The Lion L90000 freestanding gas grill with the included rotisserie kit and infrared back burner.
The reason this rotisserie prime rib on a gas grill turns out so well comes down to two things working together: the Lion L90000's independent burner zones and the included infrared rotisserie back burner. Most gas grills cannot do rotisserie properly because they lack a dedicated heat source for the back of the grill. The L90000's 15,000 BTU infrared back burner is designed specifically for this, radiating steady heat onto the spinning roast from behind so it cooks evenly on all sides.
The five independently controlled main burners let you set up the perfect indirect zone: outer burners low for ambient heat, center burners off to prevent overcooking the bottom, and the back burner doing the primary work. This precision is what a prime rib roast actually needs.
Beyond prime rib, the same rotisserie setup works beautifully for whole chicken, pork loin, turkey breast, leg of lamb, and any other self-basting roast. Once you master this method with prime rib, every other rotisserie cook feels straightforward.
The 15,000 BTU infrared back burner built into the L90000 radiates steady, even heat onto the spinning roast, giving you consistent browning and a juicy interior without hot spots or flare-ups.
Run the outer burners for ambient heat and leave the center off for a true indirect zone. This precise temperature control is what a large roast like prime rib needs for even cooking edge to edge.
Final Thoughts on Rotisserie Prime Rib on a Gas Grill
Rotisserie prime rib on a gas grill is one of those recipes that feels like a special achievement and delivers results that match. Dry brine it the night before, apply the herb rub, balance it on the spit, set the L90000 for indirect heat, and let the self-basting rotisserie roast do the work. Pull it at 120 to 125 degrees Fahrenheit, rest it for 20 to 30 minutes, and carve. That is the whole process, and the result is a holiday centerpiece worthy of any table.
The Lion L90000 makes this possible because the included rotisserie kit, infrared back burner, and independent burner zones give you everything the recipe needs right out of the box. No extra equipment, no separate smoker, no second tool. Just one grill, one spit, and one extraordinary roast.
Lion gas grills are manufactured using 16-gauge 304 commercial grade stainless steel. They feature a dual-layer welded hood, five Lion Quick Lite valves, and commercial-grade burners delivering an impressive 75,000 total BTUs of cooking power.
With the included griddle, rotisserie kit, and smoker box, a Lion Premium Grill gives you more than a standard gas grill. Add accessories like an infrared sear burner, charcoal trays, or ceramic tube trays, and you can turn your backyard grill into a complete outdoor cooking station.
Ready to get more out of your backyard cooking? Shop Lion Premium Grills, sear burner upgrades, charcoal trays, and replacement parts at Lion BBQ Direct.
