Marinated Flank Steak

By Lily | Last modified on Mar 4, 2026

Featured in: Dinner

Juicy and full of deep, savory flavors, this marinated flank steak is a standout choice for any meal. The combination of soy sauce and peach juice creates a perfect balance of salty and sweet notes, tenderizing the meat while adding wonderful caramelization when cooked.

Whether grilled or seared on the stovetop, this flank steak promises a tender bite and rich aroma that is sure to impress family and friends.

Why You’ll Love This Recipe

Simple marinade ingredients packed with flavor infuse the steak deeply for incredible taste.
The peach juice adds a subtle, natural sweetness to balance the savory soy sauce.
Quick prep and versatile cooking methods make it perfect for busy weeknights or weekend cookouts.
Slicing against the grain results in tender, melt-in-your-mouth bites every time.

Ingredients

Vegetable or Canola Oil: Neutral oil used to create a smooth marinade base that helps blend flavors and ensure juiciness during cooking.
Low-Sodium Soy Sauce: Provides salty umami notes and tenderizes the steak without overwhelming the natural beef flavor.
Peach Juice or Peach Nectar: Adds a subtle sweetness and fruity aroma that complements the savory marinade and encourages caramelization.
Dried Minced Onion: Offers a mild onion flavor that integrates seamlessly, enhancing the marinade’s savory profile.
Dried Parsley Flakes: Introduces herbaceous freshness that brightens the overall flavor without overpowering the meat.
Flank Steak (1½–2 pounds): Lean, flavorful cut perfect for marinades and quick, high-heat cooking methods like grilling or searing.

Instructions

Make the Marinade: In a large bowl, whisk together the vegetable oil, soy sauce, peach juice, dried minced onion, and dried parsley until fully combined. This mixture will tenderize and flavor the steak deeply during marination.
Marinate the Steak: Place the flank steak in a large zip-top bag or shallow dish and pour the marinade over it, making sure the steak is fully coated. Seal and refrigerate for at least 4 hours or overnight for maximum flavor infusion and tenderness.
Bring the Steak to Room Temperature: Remove the steak from the refrigerator about 30 minutes before cooking to allow it to come to room temperature. This step ensures even cooking. Discard the used marinade to avoid cross-contamination.
Cook the Steak – Grill Method: Preheat the grill to medium-high heat and grill the steak for 4 to 6 minutes on each side for medium-rare doneness. Monitor the internal temperature to reach 130–135°F for perfect tenderness and juicy results.
Cook the Steak – Stovetop Method: Alternatively, heat a cast-iron skillet over high heat and sear the steak for 4 to 6 minutes per side, achieving a beautiful crust and desired doneness. This method is convenient and yields equally tender meat.
Rest and Slice: Allow the steak to rest for 10 minutes after cooking, letting the juices redistribute. Then, slice thinly against the grain to maximize tenderness and create perfect bite-sized pieces.

You Must Know

Always slice against the grain to break up muscle fibers and enhance tenderness.
Pat the steak dry before cooking to encourage better caramelization and a more flavorful crust.
If using sweetened peach nectar, adjust salt levels in the marinade to prevent it from becoming too salty.

Storage Tips

Store leftover cooked steak in an airtight container in the refrigerator for up to 3 days. Reheat gently to maintain tenderness or use cold in salads and sandwiches. The marinade cannot be reused for food safety reasons.

Serving Suggestions

Serve sliced flank steak alongside roasted vegetables or mashed potatoes for a hearty meal. It’s also delicious served over fresh salads, tucked into tacos, or layered in sandwiches for versatile dining options.

Professional Tips

For more intense charred flavors, pat your steak dry before grilling or searing.
Marinate longer for deeper flavor infusion, up to 12 hours, but do not exceed 24 hours to avoid a mushy texture.
Use a meat thermometer to precisely hit your preferred doneness for the best results.

FAQs

Can I use fresh onions instead of dried minced onion?: Yes, finely chopped fresh onions can be used but may add more moisture to the marinade and slightly change texture.
What if I don’t have peach juice or nectar?: You can substitute with orange juice or apple juice, but peach juice provides the ideal balance of sweetness and flavor.
How long should I marinate the flank steak?: At least 4 hours is recommended, but marinating overnight (up to 12 hours) will yield the best flavor and tenderness.
Can I cook the steak in the oven instead of grilling?: Yes, broil on high for 4–6 minutes per side, but grilling or pan-searing gives better caramelization.
What is the best way to reheat leftovers?: Warm gently in a skillet over low heat or microwave with a microwave-safe cover to retain moisture.
Is flank steak gluten-free with this marinade?: Yes, if you use gluten-free soy sauce. Regular soy sauce typically contains gluten.
Can this steak be frozen after marinating?: Yes, you can freeze the marinated steak in the marinade for up to 2 months. Thaw overnight in the fridge before cooking.