Name: Traeger Smoked Flank Steak Recipe
Prep time: 10 min
Cook time: 90 min
Total time: 130 min
Ingredients: 3 lb flank steak; 3/4 cup olive oil (extra virgin); 1/2 cup soy sauce (substitute Worcestershire sauce); 2 tbsp red wine vinegar; 1 medium lime (juiced); ¼ cup brown sugar; 2 tbsp dijon mustard; 2 tbsp garlic (minced); 1 tbsp ginger (minced, optional); ½ tsp black pepper (ground); ½ tsp chipotle powder (red pepper flakes, or something spicy, optional); 5 sprigs cilantro (rough chopped, optional)

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Smoked flank steak is one of the best Traeger main dishes for a nice dinner. When you smoke flank steak at 225 degrees F it has a rich flavor. Make yummy tacos with leftovers! Let’s smoke steak…

Table of Contents

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Sliced Smoked Flank Steak with garlic marinade

Ingredients

Here’s what you need to make flank steak in the smoker.

Flank steak
Olive oil
Soy sauce
Red wine vinegar
Lime
Brown sugar
Dijon mustard
Garlic
Ginger
Black pepper
Chipotle powder (or use something spicy like red pepper flakes)
Cilantro

Traeger Smoking Flank Steak on the pellet grill with mashed potatoes

How long does it take to smoke flank steak?

Flank steak should take 90 minutes to smoke at 225 degrees F. Time may fluctuate based on the steak size and the temperature which you have your smoker set to. It’s always best to use an internal read thermometer when smoking flank steak.

Is London broil the same as flank steak?

Eh, not really. A London broil is the technique used for cooking a cut of meat like flank steak after marinating it overnight. Traditionally, it’s broiled the next day. For a very good oven baked steak recipe, see this tri tip.

Do you need to marinade flank steak before smoking it?

Like many Sip Bite Go steak recipes, to smoke flank steak you first should prepare your flank steak by either marinating it or using a dry rub. Ultimately it’s your preference, however I prefer to marinade flank steak.

Food Blogger holding Marinated Flank Steak for Smoking on the Traeger pellet grill

What can you use for a marinade for flank steak?

To marinade a flank steak, you will use a mixture of wet and dry ingredients. Use the recipe here on Sip Bite Go, or create your own. You’ll want to use a mixture of oil, vinegar, citric acidity (like limes), sugar (for sweetness), and of course salt (or soy sauce), pepper, and garlic if you choose.

Additionally, you can add in some fresh herbs like parsley or cilantro. See this grilled flank steak or skirt steak recipe for inspiration. Always marinate for an absolute minimum of 20 minutes – a few hours is ideal.

Do you need to use the reverse sear method to smoke flank steak?

No, you do not need to use the reverse sear method. You should feel comfortable knowing that you can put the flank steak directly into the smoker at a higher temperature and cook until done.

If you decide to use the reverse sear method, I recommend that you smoke the flank steak at a lower temperature between 180 – 200 degrees F, then increase the smoker temperature to 500 degrees F and sear until you reach your desired internal temperature.

How to smoke flank steak

Now I’ll walk you through it…

Infographic with recipe steps for smoking flank steak on Traeger pellet grill with captions

Detailed recipe steps

Preheat Traeger Grills or Pitt Boss or whatever pellet grill you’re using to 225 degrees F.
Prep flank steak for smoking by first preparing the marinate. Combine all marinade ingredients into a bowl and stir until combined.
Add flank steak to the marinade and place the bowl into the fridge for at least 30 minutes.
Smoke flank steak for about 90 minutes directly on the grill grates of your smoker, keeping in mind your desired internal temperature. (Exactly how long to smoke flank steak at 225 degrees F will depend on how thick it is, and how many times the smoker was opened, letting heat escape.)
Remove flank steak. I recommend pulling the steak off at 130 – 135 degrees F internal temperature for a medium rare finish. For more of a medium smoked flank steak, pull it from the smoker when the temperature reaches 140 – 145 degrees F as measured with an internal read thermometer for medium doneness.
Finish smoked flank steak by slicing into strips or into smaller pieces if making marinated flank steak tacos and enjoy.

See how to make a steak salsa marinade…

Traeger Pellet Smoker Flank Steak Sliced On A Cutting Board

What to do with leftover smoked steak

Leftover steak cooked on the smoker is great in tacos, on 15-minute smoked nachos, or on top of Philly cheesesteak pizza.

What to serve with smoked flank steak

Smoke flank steak on the Traeger with a side dish that cooks at the same temperature of 225 degrees F, like this smoked mashed potatoes with garlic recipe.

Another recipe to smoke on the Traeger at 225 degrees F is this side dish for smoked asparagus. It cooks in about an hour.