How Long To Cook Tri Tip On Traeger At 350

ByLily

Smoking a tri tip on a Traeger at 350°F gives you a nice crust while keeping the inside juicy and pink. If you want to know exactly how long to cook tri tip on traeger at 350, the short answer is 35 to 45 minutes for a 2 to 3 pound roast, depending on thickness and your target doneness.

That window is tighter than a low-and-slow brisket cook. Tri tip is a small, lean cut, so 350°F is a hot-and-fast cook on a pellet grill. You get smoke flavor plus a seared exterior in under an hour.

Below you’ll find a full time chart, a step-by-step method, and the temps that matter most.

How Long To Cook Tri Tip On Traeger At 350

Use this chart as your starting point. Times are for a whole tri tip cooked at 350°F with the lid closed.

  • 1.5 to 2 lb roast: 25 to 35 minutes
  • 2 to 2.5 lb roast: 30 to 40 minutes
  • 2.5 to 3 lb roast: 35 to 45 minutes
  • 3 to 4 lb roast: 45 to 60 minutes

Always pull by internal temperature, not by the clock. A thick roast can take 10 minutes longer then a thin one of the same weight.

Target Internal Temperatures For Tri Tip

  • Rare: 120 to 125°F
  • Medium rare: 130 to 135°F
  • Medium: 140 to 145°F
  • Medium well: 150 to 155°F

Medium rare is the sweet spot for tri tip. The meat stays tender and doesn’t dry out. Carryover cooking will raise the temp another 5 to 10°F while it rests, so pull 5°F early.

What Affects The Cooking Time

  • Thickness: A thick roast needs more time then a flat one.
  • Starting temp: Cold meat from the fridge adds 5 to 10 minutes.
  • Weather: Cold or windy days slow a pellet grill down.
  • Lid opening: Every peek drops the chamber temp.
  • Fat cap: A trimmed roast cooks a bit faster.

Step By Step: Tri Tip On A Traeger At 350°F

Step 1: Prep And Season The Roast

Pat the tri tip dry with paper towels. Trim any thick fat cap down to about 1/4 inch. Coat all sides with a simple rub, then let it sit at room temp for 20 to 30 minutes while the grill heats.

Step 2: Preheat The Traeger To 350°F

Set the controller to 350°F and close the lid. Let it run for 10 to 15 minutes so the grates get hot. This step gives you a better sear and a more even cook.

Step 3: Place The Tri Tip On The Grates

Put the roast fat side up over indirect heat. Close the lid and don’t touch it for the first 20 minutes. That gives the surface time to brown.

Step 4: Check The Temp At 25 Minutes

Insert a digital thermometer into the thickest part. Start checking at the 25 minute mark for smaller roasts. For bigger ones, check at 30 minutes.

Step 5: Pull At 5°F Below Your Target

Pull the tri tip when it reads 125°F for medium rare. Tent it loosely with foil on a cutting board.

Step 6: Rest For 10 Minutes

Resting lets the juices settle. Skip this and you’ll lose moisture on the board. Ten minutes is plenty for a roast this size.

Step 7: Slice Against The Grain

Find the grain and cut across it in thin slices. Tri tip has two grain directions, so turn the roast halfway through slicing.

Tips For Better Results At 350°F

  • Use a leave-in probe thermometer so you don’t have to open the lid.
  • If the crust is browning too fast, move the roast to a cooler spot on the grate.
  • For more smoke flavor, start at 225°F for 20 minutes, then raise to 350°F to finish.
  • Let the rub sit for at least 20 minutes so it sticks to the meat.
  • Don’t slice hot. Rest first, always.

Common Mistakes To Avoid

Cooking Too Long

Tri tip goes from juicy to tough fast. Past 150°F it starts to dry out. Pull early and let carryover heat finish the job.

Not Preheating

A cold grill means a longer cook and a weaker crust. Give the Traeger a full 10 to 15 minutes at 350°F before the meat goes on.

Slicing With The Grain

This is the number one reason tri tip feels chewy. Look at the lines in the meat and cut across them, not along them.

Frequently Asked Questions

Can I Cook Tri Tip At 350°F The Whole Time?

Yes. A full 350°F cook works well and takes 35 to 45 minutes for most roasts. Just watch the internal temp closely near the end.

Should I Flip The Tri Tip While Cooking?

One flip at the halfway point is fine. Flipping more then once slows the cook and doesn’t add much.

How Do I Know When Tri Tip Is Done?

Use a digital thermometer. Medium rare is 130 to 135°F after resting. Time alone is not reliable.

Can I Cook A Frozen Tri Tip On The Traeger?

You can, but add 20 to 30 minutes and season after it thaws on the grill. Fresh or thawed meat gives better results.

Final Word

At 350°F on a Traeger, most tri tips finish in 35 to 45 minutes. Smaller roasts take closer to 25 to 30 minutes. Medium rare means pulling at 125°F and resting for 10 minutes. Keep a thermometer handy, slice against the grain, and you’ll get a juicy roast with a solid crust every time.

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