Mustard Herb Flank Steak

Elevate your weeknight dinners with this flavorful Mustard Herb Flank Steak—a dish that combines tender, juicy beef with a zesty marinade bursting with Dijon mustard, fresh herbs, and a hint of citrus. This quick recipe features a simple yet sophisticated blend of garlic, rosemary, thyme, and a touch of optional red chili flakes for a subtle kick. Perfectly seared on the grill, the steak achieves a mouthwatering char while maintaining a tender, juicy interior. Easy enough for a family dinner but impressive enough for guests, this recipe comes together in just 25 minutes of active prep and cook time (plus marinating). Slice thinly against the grain, sprinkle with fresh parsley, and serve alongside your favorite sides for an unforgettable meal that’s both rustic and refined. Perfect for steak lovers, summer grilling, and quick gourmet meals at home!

Nutriscore Rating: 50/100

Prep Time:10 mins

Cook Time:15 mins

Total Time:25 mins

Servings: 4

Ingredients

• 1 pound flank steak
• 3 tablespoons Dijon mustard
• 2 tablespoons olive oil
• 3 garlic cloves, minced
• 2 teaspoons fresh rosemary, chopped
• 2 teaspoons fresh thyme, chopped
• 1 tablespoon lemon juice
• 1 teaspoon salt
• 0.5 teaspoon black pepper
• 0.25 teaspoon red chili flakes (optional)
• 2 tablespoons parsley, for garnish (optional)

Directions

Step 1

Place the flank steak in a resealable plastic bag or a shallow dish.

Step 2

In a small bowl, whisk together Dijon mustard, olive oil, minced garlic, rosemary, thyme, lemon juice, salt, black pepper, and red chili flakes (if using) until well combined.

Step 3

Pour the mustard herb marinade over the flank steak, ensuring the steak is fully coated. Seal the bag or cover the dish and refrigerate for at least 2 hours, or ideally overnight for maximum flavor.

Step 4

Remove the steak from the refrigerator 30 minutes before cooking to allow it to come to room temperature.

Step 5

Preheat a grill or grill pan over medium-high heat. Lightly oil the grates to prevent sticking.

Step 6

Remove the steak from the marinade, allowing any excess to drip off, and place it on the preheated grill.

Step 7

Grill the steak for 4-6 minutes per side, depending on your desired level of doneness. For medium-rare, aim for an internal temperature of 130°F (54°C).

Step 8

Once cooked, transfer the steak to a cutting board and let it rest for 10 minutes to retain its juices.

Step 9

Slice the steak thinly against the grain for the best texture and tenderness.

Step 10

Garnish with chopped parsley, if desired, and serve immediately. Enjoy!

Nutrition Facts

Serving size	562.9 grams (562.9g)

Amount per serving	% Daily Value*
Calories	1468

Total Fat 101.10g	130%
Saturated Fat 27.10g	136%
Polyunsaturated Fat 5.40g
Cholesterol 413mg	138%
Sodium 5077mg	221%
Total Carbohydrate 5.60g	2%
Dietary Fiber 0.90g	3%
Total Sugars 0.40g
Protein 132.80g	266%

Vitamin D 18IU	91%
Calcium 60mg	5%
Iron 12mg	68%
Potassium 1435mg	31%

*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 62.2%

Protein: 36.3%

Carbs: 1.5%