Sous Vide Flank Steak

Sous Vide Flank Steak

By Mark Hinds | Updated January 23, 2026

Cooking flank steak sous vide creates a flavorful steak so tender you can cut it with a fork.

To help highlight the steakโ€™s natural flavors, this recipe uses a spice rub with a little chili powder and smoked paprika. The flavors in the spices, along with finishing the steak on the grill, give it a nice smoky flavor.

What makes flank steak cooked sous vide better than one entirely cooked on the grill is how it turns out so supple and juicy.

Cooking Steak Sous Vide

The recipe and technique used here will work equally well for hanger, skirt, flat iron, or other cuts of beef.

Flank steak is a long flat cut from the lower belly of the cow. Loaded with complex flavors, itโ€™s a cut that is adept at absorbing spice rubs and marinades and is often grilled or braised.

What makes sous vide an ideal method for cooking flank steak and other tougher cuts like skirt or hanger steak is how the slow cooking process breaks down tougher, more fibrous cuts of beef without losing any of their flavors, letting you end up an unbelievably tender steak that has deep flavors and melts in your mouth.

In our testing, we found that the sweet spot for a beautifully cooked medium rare flank steak is 133โ„‰ for 6 hours. If you like your steak cooked medium, use 140โ„‰.

We also found that steaks cooked for 24 hours or more, which is the time used in lots of other recipes, ended up too soft and that it didnโ€™t feel like you were eating steak anymore.ย  Steaks cooked shorter than 6 hours werenโ€™t as tender as we wanted.

A tip when youโ€™re slicing flank or skirt steak is to always make sure to cut it across the grain. Otherwise, it can end up tough and chewy.

If youโ€™re interested in learning more about how sous vide works, read What is Sous Vide Cooking and Why it Works. A few other sous vide recipes to try are Sous Vide Roast Beef and a Sous Vide Pork Tenderloin with Chili Rub.

For a delicious dinner, try serving this recipe with White Cheddar and Horseradish Mashed Potatoes and Sweet Corn with Anaheim Peppers. This recipe can also be used for tacos or fajitas.

Sous Vide Flank Steak

Sous Vide Flank Steak

3.7 from 202 votes
What makes sous vide an ideal method for cooking flank steak and other tougher cuts like skirt or hanger steak is how the slow cooking process breaks down tougher, more fibrous cuts of beef without losing any of their flavors, letting you end up an unbelievably tender steak that has deep flavors and melts in your mouth.
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Prep Time: 15 minutes
Cook Time: 6 hours
Total Time: 6 hours 15 minutes
Servings: 3 servings

Ingredients

  • 1 lb flank steak
  • 2 tsp salt
  • 1 tsp pepper
  • 1 tsp garlic powder
  • 1 tsp chili powder
  • 1/2 tsp smoked paprika

Instructionsย 

  • Start by setting up your sous vide cooking station and bringing the water to 133โ„‰.
  • Mix the salt, pepper, smoked paprika, garlic and chili powders together. Rub the spices onto the steak.
  • Vacuum seal the steak in a plastic bag, set it in the water bath, and cook for 6 hours.
  • When itโ€™s finished cooking take the steak out and grill it on a medium-high grill for 2 to 3 minutes a side to develop a nice crust on the outside.
  • After taking the steak off the grill let it rest for 5 to 10 minutes.
  • To serve cut the steak into thin strips across the grain.

Notes

Check out our story on Getting Started Cooking Sous Vide for lots more tips and information. Umami also has an entire section on Sous Vide that has all the stories, recipes, and equipment you need.
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Nutrition
Calories: 215kcal | Carbohydrates: 1g | Protein: 32g | Fat: 7g | Saturated Fat: 3g | Cholesterol: 90mg | Sodium: 1646mg | Potassium: 545mg | Vitamin A: 430IU | Calcium: 32mg | Iron: 2.6mg

The nutrition information shown is an estimate based on available ingredients and preparation.

Mark is an experienced food writer, recipe developer, and photographer who is also Umamiโ€™s publisher and CEO. A passionate cook who loves to cook for friends, he can often be found in the kitchen or by the grill testing new recipes.

More Info About Mark Hinds

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3.71 from 202 votes (202 ratings without comment)

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