Sous Vide Flank Steak Recipe

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Flank is one of the leanest cuts of beef, but because of its leanness, it’s also one of the toughest cuts. That’s why it’s often sliced thinly and used for dishes like steak fajitas.

Is there a way to make it more tender though? Let’s try it with this Sous Vide Flank Steak recipe.

Sous Vide Flank Steak Recipe

Sous Vide Flank Steak Recipe

One of the best things about flank steak is its one of the lower priced beef cuts. One of the biggest downsides to flank steak is its toughness though.
The Sous Vide Flank Steak recipe here will discover a new way to cook through sous vide. It'll soften the meat's toughness leading to a delicious steak.
The perfect garnish for this recipe is a spiced tomato sauce that we are going to prepare along with the beef flank.
Prepare this recipe 2 days before serving, since the cooking time is longer than 30 hours.
5 from 1 vote
Cook Time 1 d 6 hrs 30 mins
Total Time 1 d 6 hrs 30 mins
Course Main Course
Cuisine American
Servings 2 people


  • Sous Vide Cooker
  • Sous Vide Container
  • Vacuum Sealer
  • Vacuum Seal Bags
  • Cast Iron Skillet
  • Metal Pot


  • 14 Ounce Beef Flank (400g)
  • 1/2 Onion
  • 5 Basil Leaves
  • 2 Garlic Cloves
  • 1 tbsp Chopped Dried Rosemary
  • 14 Ounces Tomato Purée (400g)
  • 1 tbsp Butter
  • 5 Sage Leaves
  • 1 tbsp Paprika Powder
  • 1 tbsp Curry Powder
  • 3 tsp Salt


  • Set the sous vide cooker at 52°C / 125.6°F. While the water heats, we'll first prep the beef flank with a good sear.
  • Take a cast iron skillet and heat it over high heat. Once it's very hot, place the flank on it and sear all sides to lock in the juices.
  • Don’t let it cook for a long time. 30-60 seconds on each side should be enough.
  • Once the water it heated, put the beef inside the vacuum seal bag and seal it. No need to add other ingredients into the bag.
  • Cook the flank for 30 hours.
    In the meantime, we can prepare the tomato sauce.
  • Place a pot over medium heat.
  • Finely chop the 1/2 onion. When done, add 2 tbsp of olive oil and the chopped onion inside the pot.
    Fry over low heat for 2minutes.
  • Add the peeled garlic cloves and basil leaves. Also pour in the tomato purée.
  • Let it cook for 15 minutes over the lowest heat possible.
  • After 15 minutes, we have a tomato sauce that's almost ready. It still needs to be spiced and seasoned.
  • Now add everything else. Add the butter, sage leaves, paprika powder, curry powder, dried rosemary, and the 3 tsp of salt in the tomato sauce.
  • Let it cook for another 2 minutes.
    Test the sauce and if it tastes a bit acidic, add 1 tsp of sugar to compensate and remove the acidity.
  • When done, take it off the stove and keep refrigerated until the flank is done.
  • Once the meat is perfectly cooked, you just need to slice it down and serve glazed with our spiced tomato sauce.
Keyword Beef, Flank Steak

Check out other great sous vide steak recipes:

1 thought on “Sous Vide Flank Steak Recipe”

  1. 5 stars
    I love flank steak because it’s lean, but it’s always been tough to find a way to cook them to make them more tender. Sous vide is definitely a good option.

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