Tender Smoked Flank Steak: A Quick & Flavorful Recipe

Smoked flank steak uses the reverse sear method to transform a traditionally tough cut into tender, deeply flavorful beef in under 2 hours. Smoke the steak at 225°F on a pellet grill for 45-60 minutes until the internal temperature reaches 115-120°F. Then, sear it in a screaming-hot cast-iron skillet for 1-2 minutes per side to build a caramelized crust. This finishes the steak at a perfect 130°F medium-rare. Many pitmasters prefer this temperature for tenderness, though cooks who want to follow federal food-safety guidance should take whole beef cuts to 145°F. Whether you slice it for smoked flank steak tacos, pile it into fajitas, or drizzle it with fresh chimichurri, this recipe delivers bold results without an all-day commitment. A 1.5-2 pound flank steak feeds 4-6 people with minimal hands-on time.

Why Flank Steak is Perfect for the Smoker

Flank steak’s loose, open grain structure absorbs wood smoke rapidly, developing meaningful smoke flavor in just 45-60 minutes, which is much faster than thicker cuts. Its flat, uniform shape also promotes even cooking at low temperatures, while the lean muscle fibers benefit from gentle indirect heat, preventing them from drying out when pulled at the correct internal temperature.

Flank steak comes from the abdominal muscles of the cow. The long, visible grain runs in one clear direction, which makes it easy to identify the correct slicing angle after cooking. Some pitmasters ask whether flank steak qualifies as a poor man’s brisket. Chuck roast is the traditional answer to that question because it has enough fat to handle brisket-style temperatures. Flank steak offers a different advantage – rich, beefy flavor with a quick-smoke approach that takes under 2 hours from start to finish.

Preparing Flank Steak: The Dry Brine Method

A dry brine using kosher salt is a simple yet powerful technique for tenderizing flank steak. Resting the salted meat for 2-24 hours in the refrigerator draws out moisture, which then dissolves the salt and is reabsorbed, seasoning the meat from within. This process also dries the surface, which is critical for achieving a perfect, crispy sear.

How a Dry Brine Works

The salt draws moisture to the surface, dissolves into the liquid, then gets reabsorbed into the meat. This process tenderizes the steak from within while drying the exterior for a superior sear and crust formation.

Step-by-Step Dry Brining Instructions

Dry brine the steak in three steps:

1. Measure and season: Apply 3/4 teaspoon of kosher salt per pound evenly over both sides and the edges.
2. Elevate the steak: Place it uncovered on a wire rack so refrigerator air can circulate underneath.
3. Rest for 2–24 hours: Use the shorter end for convenience or the full overnight window for deeper seasoning and a drier surface.

Do not add marinade after dry brining; choose one preparation path before smoking to prevent over-salting.

Flavor-Boosting Marinade for Smoked Flank Steak

A well-balanced marinade adds layers of flavor and helps tenderize the meat. Our recipe uses soy sauce for umami, orange juice for a touch of acidic sweetness, and garlic for pungent depth. The acidic components work to break down tough muscle fibers over 4-8 hours, resulting in a more succulent and flavorful final product.

Marinade Ingredients and Ratios

For one 1.5–2 pound flank steak, combine:

• 1/4 cup soy sauce
• 1/4 cup fresh orange juice
• 2 tablespoons olive oil
• 4 minced garlic cloves
• 1 teaspoon cumin
• 1/2 teaspoon red pepper flakes

The soy sauce supplies salt and umami, while orange juice adds acidity and sweetness.

How to Properly Marinate the Steak

Use the flavorful steak marinade in this order:

1. Submerge the flank steak so the liquid contacts both sides.
2. Refrigerate for 4–8 hours to build flavor without softening the exterior excessively.
3. Pat the steak completely dry with paper towels before smoking so the surface can form bark.

Discard the used marinade or boil a separately reserved portion if you want a serving sauce.

Pro Tip

Both methods enhance flavor and tenderness, but they are mutually exclusive – choose one or the other. If you dry brine, skip the marinade and vice versa. Combining both can over-salt the steak.

Smoking on a Pellet Grill (Time and Temperature)

Set your pellet grill to 225°F and smoke the flank steak for 45-60 minutes until the internal temperature reaches 115-120°F. At 250°F, the steak reaches this target in approximately 30-40 minutes. Use a leave-in probe thermometer and cook to temperature rather than time for consistent results regardless of steak thickness.

Setting Up Your Pellet Grill

Prepare the pellet grill before adding the steak:

1. Set the controller to 225°F and allow the cooker to preheat fully.
2. Confirm clean smoke and steady heat before opening the lid.
3. Place the flank steak directly on the grates with its thickest end positioned in the most stable heat zone.

A settled cooking temperature makes the pull-temperature estimate more reliable.

Using a Probe for Perfect Doneness

Monitor the steak by temperature rather than the clock:

• Probe placement: Insert a leave-in thermometer into the thickest section without pushing the tip through the thin side.
• At 225°F: Expect a 1.5–2 pound flank steak to reach 115–120°F in about 45–60 minutes.
• At 250°F: Expect the same pull temperature in roughly 30–40 minutes.

Remove the steak at 115–120°F so the high-heat sear can finish it without overshooting the desired doneness.

What Are the Best Wood Pellets for Flank Steak?

Match the wood to the intensity you want:

• Oak: A balanced, beef-friendly smoke that works for most cooks.
• Hickory: A stronger savory profile that stands up to the meat’s flavor.
• Mesquite: The boldest choice; flank steak’s sub-hour smoke time limits the bitterness that can develop on longer cooks.
• Apple or cherry: Milder fruitwood options for a lighter finish.

The short cooking window makes flank steak unusually tolerant of assertive wood, but clean smoke still matters more than volume.

Pitmaster Tip

Do not skip the probe thermometer. Flank steak varies in thickness from 3/4 inch to 1.5 inches across its length, so time estimates are unreliable. Pull at internal temperature, not clock time.

The Reverse Sear for a Perfect Crust

Remove the smoked flank steak from the grill at 115-120°F internal and immediately sear it in a screaming-hot cast-iron skillet with avocado oil or beef tallow for 1-2 minutes per side. Use a flat grill press to create even, all-over browning rather than diamond grill marks.

Pull the steak when internal temperature hits 130°F for medium-rare.

Choosing the Right Skillet and Oil

Set up the searing station before removing the steak from the smoker:

• Use cast iron for strong heat retention and full-surface browning.
• Preheat over high heat until the skillet just begins to smoke.
• Add 1 tablespoon of avocado oil or beef tallow, both of which tolerate temperatures above 450°F and suit high-heat searing techniques.

A fully heated pan shortens the sear and protects the already-smoked interior from overcooking.

Technique for an Even Sear

Sear quickly and maximize contact with the pan:

1. Lay the smoked steak flat in the hot skillet.
2. Set a flat grill press or heavy pan on top so the entire surface browns instead of forming only narrow grill marks.
3. Sear for 1–2 minutes per side and turn only when the first side has developed a dark crust.

The goal is exterior browning, not additional low-temperature cooking.

Monitoring Final Temperature

Use the thermometer to coordinate the two cooking stages:

• Smoker pull point: 115–120°F.
• Expected sear rise: About 10–15°F.
• Medium-rare finish: Pull from the skillet at 130°F.

Check near the center of the thickest section because the thin edges will cook faster.

Why You Must Rest Smoked Steak Before Slicing

Resting the steak on a cutting board for a full 10 minutes is a non-negotiable step for a juicy result. This critical pause allows the muscle fibers, which tighten during cooking, to relax and reabsorb the flavorful juices.

Skipping the rest causes those juices to spill out onto the board as soon as you slice, leaving you with dry meat.

The Science of Resting Meat

During cooking, muscle fibers tighten and push moisture to the center. Resting allows the fibers to relax and reabsorb that moisture, ensuring a juicy, flavorful result.

The Secret to Tenderness: Slicing Against the Grain

Rest the smoked flank steak for 10 minutes, then slice strictly against the grain at a 45-degree bias into 1/4-inch strips. Cutting against the grain shortens the muscle fibers, making each bite tender rather than chewy.

How to Identify the Grain

Look for the parallel lines of muscle fibers running across the surface of the flank steak. This is the grain direction.

Proper Slicing Angle and Thickness

Slice strictly against (perpendicular to) those lines. Angling your knife at a 45-degree bias creates wider, more tender strips about 1/4-inch thick.

Pairing with Classic Chimichurri Sauce

Serve slices drizzled with fresh chimichurri, a vibrant, herb-based sauce that perfectly complements the rich, smoky beef.

Chimichurri Ingredients

For the chimichurri, gather:

• 1 cup fresh parsley
• 4 minced garlic cloves
• 1/4 cup olive oil
• 2 tablespoons red wine vinegar
• 1/2 teaspoon red pepper flakes

The herb-and-vinegar mixture adds brightness to the smoky beef.

Step-by-Step Sauce Preparation

Finish the sauce in two quick steps:

1. Combine all ingredients in a bowl for a rustic texture or pulse briefly in a food processor for a finer sauce.
2. Spoon over the sliced steak just before serving so the parsley stays fresh and vibrant.

Keep the sauce separate until carving so it does not soften the steak’s crust.

Ideas for Smoked Flank Steak Tacos and Fajitas

The rich, smoky flavor of the sliced flank steak makes it an ideal foundation for tacos and fajitas. Serve it on warm flour or corn tortillas for tacos, topped with cotija cheese and pickled red onions. For a classic fajita platter, pair the steak with sizzling grilled bell peppers and onions, served alongside guacamole and sour cream.

Building the Perfect Taco

Build each taco in layers:

• Warm flour or corn tortillas
• Thin slices of smoked flank steak
• Pickled red onions
• Cotija cheese
• Fresh cilantro

Keep the toppings light enough that the smoke and seared crust remain the main flavors.

Fajita Platter Components

Arrange the flank steak with:

• Sizzling grilled bell peppers and onions
• Warm tortillas
• Sour cream
• Guacamole
• Salsa

Serve the components separately so everyone can control the balance of steak, vegetables, and toppings.

Scoring, Wagyu Flank, and Reheating Leftovers

A few more techniques worth knowing, whether you’re working with a standard flank steak or something more special.

Scoring the Surface Before Marinating

Flank steak’s tight, fibrous muscle structure resists marinade penetration more than more tender cuts. Lightly scoring the surface in a shallow crosshatch pattern (just through the surface, not deep into the meat) opens up more surface area for the marinade or dry brine to work into the meat, and can also help it absorb smoke a bit more evenly.

Smoking Wagyu Flank Steak

Wagyu flank steak has noticeably more intramuscular fat than standard flank steak, which renders faster and can push the exterior toward overdone more quickly. Watch it more closely than a standard flank steak and consider pulling it slightly earlier, since the higher fat content continues to baste the meat even after it comes off the heat.

The Lime-Bed Technique

Some cooks smoke flank steak in a cast-iron skillet set on a bed of sliced limes. The limes physically cushion the thin cut from direct, intense heat while gently infusing a subtle citrus note into the smoke – a nice option if you want a milder, brighter finish rather than a heavy char.

Reheating Leftovers Without Overcooking

Since flank steak is easy to overcook past medium-rare, reheat leftover slices gently rather than in a microwave. A low oven (around 250°F) with a splash of beef broth in a covered dish, or a few quick minutes in an air fryer, warms the meat through without pushing it much past its original doneness.

Frequently Asked Questions

Take Home Message

Smoked flank steak offers a quick and delicious way to enjoy a lean cut of beef with rich, smoky flavor. By employing a dry brine or marinade, precise temperature control on the smoker, and a high-heat reverse sear, you can transform this often-overlooked cut into a tender, juicy masterpiece. Remember to rest the steak and slice against the grain for optimal tenderness, making it perfect for tacos, fajitas, or simply drizzled with chimichurri.

Smoked Flank Steak

Smoked flank steak uses the reverse sear method to transform a traditionally tough cut into tender, deeply flavorful beef in under 2 hours.

Print Recipe Pin Recipe

Prep Time 10 minutes mins

Cook Time 1 hour hr 5 minutes mins

Marinate Time (min.) 2 hours hrs

Total Time 1 hour hr 25 minutes mins

Course Main Course

Cuisine American, BBQ

Servings 6 servings

Calories 350 kcal

Equipment

• Pellet grill Traeger, Pit Boss, or any brand.
• Leave-in Probe Thermometer Essential for cooking to the correct temperature.
• Cast iron skillet For achieving a high-heat sear.
• Grill Press Optional, for creating an even crust.

Ingredients

  

For the Flank Steak

• 1.5-2 lb flank steak

Option 1: Dry Brine

• 3/4 tsp kosher salt per pound of steak

Option 2: Marinade

• 1/4 cup soy sauce
• 1/4 cup fresh orange juice
• 2 tbsp olive oil
• 4 cloves garlic minced
• 1 tsp cumin
• 1/2 tsp red pepper flakes

For Searing

• 1 tbsp avocado oil or beef tallow

Instructions

 

• Prep the Steak (Choose One Method): For a dry brine, apply 3/4 teaspoon of kosher salt per pound of steak evenly on all sides. Place on a wire rack in the refrigerator, uncovered, for at least 2 hours and up to 24. For a marinade, combine soy sauce, orange juice, olive oil, minced garlic, cumin, and red pepper flakes. Submerge the steak in the marinade and refrigerate for 4-8 hours.
• Pat Dry: Before cooking, remove the steak from the refrigerator. If you used the marinade, pat the steak completely dry with paper towels. This step is crucial for achieving a proper sear.
• Preheat Smoker: Set your pellet grill to 225°F.
• Smoke the Steak: Place the flank steak directly on the grill grates. Insert a leave-in probe thermometer into the thickest part of the meat. Smoke for 45-60 minutes, or until the internal temperature reaches 115-120°F.
• Prepare for Searing: As the steak approaches its target temperature, preheat a cast-iron skillet over high heat until it just begins to smoke.
• Sear the Steak: Remove the steak from the smoker. Add the avocado oil or beef tallow to the hot skillet. Carefully place the steak in the skillet and sear for 1-2 minutes per side. Use a grill press for an even, all-over crust.
• Check Final Temperature: Pull the steak from the skillet as soon as the internal temperature reaches 130°F for a perfect medium-rare.
• Rest and Slice: Transfer the steak to a cutting board and let it rest for 10 minutes. To serve, slice the steak thinly against the grain.

Notes

Choose either the dry brine or the marinade, but not both, to avoid over-salting the steak. Dry brine: 2–24 hours (longer = more flavor). Marinade: 4–8 hours. Always cook to internal temperature using a reliable probe thermometer, as steak thickness varies and time is an unreliable guide. Allow 10 minutes of rest before slicing — this rest time is included in the total time above.

Keywords flank steak marinade, pellet grill flank steak, reverse sear flank steak, smoked flank steak