Sous vide cooking is a game changer in the kitchen, and when it comes to steak, it truly shines. One of the cuts that benefits immensely from this technique is flank steak. The sous vide method allows you to achieve tender, juicy, and perfectly cooked meat every time. With an infusion of flavors from a simple marinade, this Sous Vide Flank Steak recipe is sure to impress your family and friends. Let’s dive into the details and learn how to master this delicious dish!
What Makes This Recipe Special

Sous vide cooking ensures that your flank steak is cooked evenly from edge to edge, maintaining its flavor and moisture. This method allows for precise temperature control, resulting in a steak that is cooked to your preferred doneness without the risk of overcooking. The marinade adds a delightful depth of flavor, while the finishing touch of searing the steak gives it a beautiful crust. This Sous Vide Flank Steak recipe is not just about cooking; it’s about creating an experience!
Ingredient Checklist
- 32 ounces flank steak: Choose a good quality cut for the best results.
- 2 teaspoons salt: Enhances the flavor of the steak.
- 1 teaspoon pepper: Adds a nice kick.
- 1 teaspoon garlic powder: For a savory depth.
- 1 teaspoon chili flakes: Provides a hint of heat.
- 2 tablespoons balsamic vinegar: Adds a touch of sweetness and acidity.
- 1 tablespoon Dijon mustard: For a tangy flavor boost.
- 2 tablespoons butter: To finish the steak with richness.
Gear Checklist
- Sous Vide Immersion Circulator: Essential for maintaining the water temperature.
- Large Pot or Container: To hold the water for sous vide cooking.
- Vacuum Sealer or Zip-Top Bags: For sealing the flank steak with the marinade.
- Cast Iron Skillet or Grill: To achieve a perfect sear on the steak.
Cook Sous Vide Flank Steak Like This

Step 1: Prepare the Marinade
In a mixing bowl, combine the salt, pepper, garlic powder, chili flakes, balsamic vinegar, and Dijon mustard. Whisk together until well blended.
Step 2: Season the Steak
Rub the marinade all over the flank steak, ensuring it’s evenly coated. This will infuse the meat with flavor as it cooks.
Step 3: Seal the Steak
Place the seasoned flank steak in a vacuum-sealable bag or a zip-top bag. If using a zip-top bag, use the water displacement method to remove as much air as possible before sealing.
Step 4: Sous Vide Cooking
Fill a pot or container with water and attach your sous vide immersion circulator. Set the temperature to your desired doneness (130°F for medium-rare, 140°F for medium). Once the water reaches the set temperature, submerge the bagged steak in the water bath, making sure it is fully submerged. Cook for 2 to 4 hours.
Step 5: Sear the Steak
Once the cooking time is up, remove the steak from the bag and pat it dry with paper towels. Heat a cast iron skillet or grill over high heat and add butter. Once the butter is melted and sizzling, add the steak. Sear for 1-2 minutes on each side until a nice brown crust forms.
Step 6: Rest and Slice
Remove the steak from the heat and let it rest for about 5 minutes. Slice against the grain to maximize tenderness. Serve and enjoy your perfectly cooked Sous Vide Flank Steak!
Seasonal Twists

- Herb Marinade: Add fresh herbs like rosemary or thyme for a seasonal twist.
- Citrus Marinade: Use lemon juice and zest instead of balsamic for a bright flavor.
- Asian-Inspired: Replace the Dijon mustard with soy sauce and add ginger for an umami kick.
Troubles You Can Avoid
- Ensure your sous vide water bath is at the correct temperature before adding the steak to prevent uneven cooking.
- Do not skip the drying step before searing; moisture will prevent a good crust from forming.
- Slice against the grain to ensure each bite is tender.
Store, Freeze & Reheat
Leftover Sous Vide Flank Steak can be stored in the refrigerator for up to 3 days. To freeze, wrap the sliced steak tightly in foil or place it in an airtight container. It can be frozen for up to 3 months. To reheat, thaw in the refrigerator overnight and then warm gently in a sous vide water bath or a skillet over low heat to avoid overcooking.
Frequently Asked Questions
Can I use a different cut of beef for this recipe?
Yes, you can use other cuts of beef such as skirt steak or sirloin, but cooking times may vary depending on the thickness of the cut.
What is the best temperature for sous vide flank steak?
The ideal temperature for medium-rare flank steak is 130°F, while medium is around 140°F. Adjust according to your preference.
How long should I cook the flank steak sous vide?
Cooking flank steak sous vide for 2 to 4 hours allows it to become tender while retaining its moisture and flavor.
Can I marinate the steak overnight before sous vide cooking?
Absolutely! Marinating the steak overnight enhances the flavors. Just be cautious with acidic ingredients as they can begin to break down the meat.
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Time to Try It
There’s no better time than now to try your hand at making this Sous Vide Flank Steak. With its incredible flavor and tenderness, it’s sure to become a favorite in your household. Whether you’re serving it at a dinner party or just enjoying a cozy meal at home, this steak is guaranteed to impress. Gather your ingredients, fire up that sous vide machine, and get ready for an unforgettable culinary adventure!
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Sous Vide Flank Steak
Ingredients
For the Marinade:
- 32 ounces flank steak choose a good quality cut
- 2 teaspoons salt enhances flavor
- 1 teaspoon pepper adds a nice kick
- 1 teaspoon garlic powder for savory depth
- 1 teaspoon chili flakes provides a hint of heat
- 2 tablespoons balsamic vinegar adds sweetness and acidity
- 1 tablespoon Dijon mustard for tangy flavor boost
- 2 tablespoons butter to finish with richness
Instructions
Cooking Instructions
- Step 1: Prepare the Marinade - In a mixing bowl, combine the salt, pepper, garlic powder, chili flakes, balsamic vinegar, and Dijon mustard. Whisk together until well blended.
- Step 2: Season the Steak - Rub the marinade all over the flank steak, ensuring it’s evenly coated.
- Step 3: Seal the Steak - Place the seasoned flank steak in a vacuum-sealable bag or a zip-top bag, using the water displacement method to remove as much air as possible before sealing.
- Step 4: Sous Vide Cooking - Fill a pot with water and attach your sous vide immersion circulator. Set the temperature (130°F for medium-rare). Once the water reaches the temperature, submerge the bagged steak and cook for 2 to 4 hours.
- Step 5: Sear the Steak - Remove the steak from the bag, pat dry, heat a cast iron skillet or grill with butter, and sear for 1-2 minutes per side.
- Step 6: Rest and Slice - Let the steak rest for about 5 minutes, then slice against the grain and serve.
Equipment
- Sous Vide Immersion Circulator
- Large Pot or Container
- Vacuum Sealer or Zip-Top Bags
- Cast Iron Skillet or Grill
Notes
- Marinate overnight for enhanced flavors.
- Ensure the sous vide water bath is at the correct temperature before cooking.
- Slice against the grain for maximum tenderness.
