Grilling beef tenderloin on a gas grill delivers a juicy, flavorful roast. This cut is lean and tender. It cooks quickly compared to other roasts. Knowing the exact timing prevents overcooking. Factors like thickness and desired doneness matter most.
Beef tenderloin shines with simple seasoning. It comes from the loin area. This makes it naturally tender. A whole tenderloin weighs 4 to 6 pounds. Trim silver skin before grilling. Pat it dry for a good sear.
Gas grills offer precise heat control. Preheat to high for searing. Then lower for indirect cooking. Use a two-zone setup. This means hot side and cooler side. A meat thermometer is essential. Aim for internal temperatures: 125°F for rare, 135°F for medium-rare, 145°F for medium.
Preparing the Beef Tenderloin
Start with a high-quality cut. Choose center-cut tenderloin for even thickness. About 4 pounds serves 8 to 10 people. Remove from fridge 1 hour before grilling. Let it reach room temperature. This ensures even cooking.
Trim excess fat. Silver skin toughens during cooking. Use a sharp knife to peel it off. Season generously. Kosher salt and black pepper work best. Rub olive oil over the surface. Add garlic powder or rosemary for flavor.
Tie the tenderloin with butcher’s twine. This keeps its shape. Space ties 2 inches apart. Let it sit seasoned for 30 minutes. This draws out moisture for better browning.
Setting Up Your Gas Grill
Clean the grates first. Preheat on high for 15 minutes. This kills bacteria and creates sear marks. Oil the grates lightly. Use tongs and a paper towel dipped in oil.
Create two zones. Turn half the burners to high. Leave the other half off or low. Target 450°F to 500°F on the hot side. 300°F to 350°F on the cool side. Close the lid to maintain heat.
Install a drip pan under the cool side. It catches fat drippings. Prevents flare-ups. Have a thermometer ready. Instant-read works for checks. Probe thermometer stays inserted.
Grilling Times and Temperatures
How long to grill beef tenderloin on gas grill depends on size and doneness. A 4-pound tenderloin takes 45 to 60 minutes total. Always use internal temperature, not time alone. Wind, lid openness, and grill model affect results.
Sear first. Place on hot side. Sear 5 minutes per side. Rotate for even crust. This builds flavor via Maillard reaction.
Move to indirect heat. Close lid. Cook until target temp. Pull 5°F early. Carryover cooking raises it more.
Here’s a guide for a 4- to 5-pound tenderloin:
Doneness Internal Temp (Pull) Internal Temp (Rest) Total Time (Approx.)
Rare 120°F 125°F 40-50 minutes
Medium-Rare 130°F 135°F 45-55 minutes
Medium 140°F 145°F 50-60 minutes
Medium-Well 150°F 155°F 55-65 minutes
Flip every 10 minutes on indirect. Baste with butter or herbs if desired. Check temp in thickest part. Avoid thin end to prevent false readings.
For thicker cuts over 5 pounds, add 10-15 minutes. Smaller filets (6-8 oz each) sear 3-4 minutes per side on high, then 4-6 minutes indirect.
Step-by-Step Grilling Process
- Preheat grill as described. Ensure two-zone setup.
- Season and tie tenderloin. Oil lightly.
- Sear on hot side. 4-5 minutes per side. Get four sides if possible.
- Move to cool side. Insert probe thermometer.
- Close lid. Cook indirect. Check every 10 minutes.
- Remove at target pull temp. Tent with foil.
- Resting is key. Let it sit 15-20 minutes. Juices redistribute. Internal temp rises 5-10°F. Slice against the grain. Serve medium-rare for best tenderness.
Tips for Perfect Results
- Monitor fuel. Gas grills drop heat if propane runs low. Refill tank beforehand.
- Avoid piercing meat. Use tongs, not forks. This keeps juices in.
- Windy days? Position grill to block breeze. Use grill cover between cooks.
- For smoke flavor, add wood chips in foil pouch on hot side. Hickory or oak pairs well.
- Reverse sear option: Cook indirect first to 10°F below target. Then sear 1-2 minutes per side. Great for even doneness.
- Common mistake: Overcooking. Tenderloin dries out past medium. Medium-rare is ideal.
- Pair with sides. Grilled veggies, baked potatoes, or salad complement it.
Resting and Serving
Resting locks in moisture. Foil tent allows steam to escape slowly. No need to cover tightly.
Slice ½-inch thick. Use sharp knife for clean cuts. Fan slices on platter.
Drippings make au jus. Deglaze pan with beef stock, wine. Reduce and strain.
Leftovers store 3-4 days in fridge. Reheat gently in low oven.
Frequently Asked Questions (FAQs)
- Can I grill a whole beef tenderloin on a gas grill? Yes. Use two-zone method. Sear then indirect. Takes 45-60 minutes for 4 pounds.
- What temperature should my gas grill be for beef tenderloin? 450-500°F for searing. 300-350°F indirect. Use thermometer for accuracy.
- How do I know when beef tenderloin is done on the grill? Check internal temp: 135°F medium-rare. Resting confirms final doneness.
- Should I marinate beef tenderloin before grilling? No need. It’s tender. Salt, pepper, and sear enhance natural flavor. Marinate 30 minutes max to avoid mushiness.
- What if my tenderloin is frozen? Thaw fully in fridge overnight. Never grill from frozen. Uneven cooking results.
Master these steps for restaurant-quality results at home. Practice builds confidence. Enjoy your grilled beef tenderloin.