Flank Steak Marinade (Easy, Juicy & Flavorful)
Developed and tested by Robyn Conley Downs
on Jul 28, 2025 
This easy flank steak marinade brings bold, savory flavor with just a few pantry staples like soy sauce and garlic. It’s your go-to for juicy, tender results whether you’re firing up the grill or searing on the stovetop.
5 star review
“Omg. Usually I do simple soy/garlic/red pepper steak marinade. Never again. With a couple of extra minutes and ingredients (that I already had on hand by the way), I got a similar umami vibe but with so much more depth. Delish. Zero leftovers. Zero regrets. You’re so good, Robyn!”
– Amy
A Flank Steak Marinade with All Flavor + No Fuss
There are nights when I want dinner to feel like something, buuuuuuut I also don’t really want to think too hard about it. And that’s exactly where this flank steak marinade comes in. I built using pantry staples I always have on hand, with the intention of turning a plain cut of beef flank steak into something SO juicy and so savory, it’s giving steakhouse vibes without even trying. Think tender slices of beef with caramelized edges, soaked through with tangy lime, salty soy, and juuuuuust enough garlic to let you know it’s there without being overpowering.
It’s truly is a go-to steak marinade that delivers every time, whether you’re grilling on a Saturday for friends or pan-searing on a Tuesday. And yes, I’ve absolutely sliced it straight off the cutting board and called that dinner. Cause you know, girl dinner. 🙂 I believe simple marinade recipes are one of the easiest ways to level up homemade meals with almost zero extra effort. This one comes together in under five minutes with what you probably already have in the pantry, and it handles the heavy lifting while you get on with your day. And while it’s fantastic on its own, it’s also really darn good with a little quick guac for steakhouse-style fajitas or tacos!
Welcome to My Kitchen! Let’s Make Marinated Flank Steak
Tips for the Juiciest + Most Flavorful Grilled Flank Steak
- In testing this recipe with different pans, a cast iron skillet gave the best crust. That golden sear locks in all the juicy goodness. You’ll just want to make sure your pan’s really hot before the steak hits it.
- I recommend slicing the steak thinly, against the grain. It’s the difference between tender, juicy pieces and chewy ones. Trust me, it’s worth paying attention to!
- I’ve used both lime and lemon juice here, and both work. Either way, the acid is what balances the richness and brings everything together flavor-wise.
Flank Steak Marinade (Easy, Juicy & Flavorful!)
Ingredients
For the Marinade:
- ¼ cup neutral oil, such as avocado or canola
- 3 tablespoons low-sodium soy sauce (or tamari)
- 2 tablespoons Worcestershire sauce
- 1 tablespoon brown sugar
- 2 tablespoons fresh lime juice (or lemon juice)
- 3 cloves garlic, minced
- 1 teaspoon kosher salt
- 1 teaspoon onion powder
- ½ teaspoon chili powder
- ¼ teaspoon freshly ground black pepper
For the Steak:
- 1½ to 2 pounds flank steak
Equipment
Instructions
- Mix the Marinade: In a small bowl or measuring cup, whisk together the oil, soy sauce, Worcestershire sauce, brown sugar, lime juice, garlic, salt, onion powder, chili powder, and pepper. Remove 2 tablespoons of the marinade to a small bowl, cover and refrigerate.
- Marinate the Steak: Place the flank steak in a zip-top bag or shallow dish, then pour the remaining marinade over it. Turn a few times so it’s evenly coated. Cover and refrigerate for at least 4 hours, or overnight.
- Bring to Room Temp: About 20-30 minutes before cooking, pull the steak from the fridge and let it sit at room temperature, which will help it cook more evenly.
- Cook the Steak: Remove the steak from the dish or bowl and discard the marinade. Grill the steak over medium-high heat or sear in a hot skillet for 4-6 minutes per side or until it reaches an internal temperature of 130°F (for medium rare). You’re looking for a deep golden crust and juicy center.
- Rest & Slice: Transfer to a cutting board and let it rest for 5-10 minutes. Slice thinly across the grain. Drizzle with the reserved 2 tablespoons marinade, then serve.
Notes
- Marination Time: I found that a 2-hour marinate gives solid flavor to this flank steak, but overnight is where the magic really happens. The longer soak makes the steak extra tender and deeply seasoned all the way through, but if 2 hours is all you’ve got, it still tastes great.
Omg. Usually I do simple soy/garlic/red pepper flakes marinade. Never again. With a couple of extra minutes and ingredients (that I already had on hand by the way), I got a similar umami vibe but with so much more depth. Even put a little of the marinade in with the sautéed onions and mushrooms — chefs kiss, baby. Served with roasted zucchini and baby potatoes. Delish. Zero leftovers. Zero regrets. You’re so good, Robyn!
Amy, woohoo, so happy to hear you enjoyed this steak recipe, and love your notes and serving suggestions. Thanks SO much for sharing your thoughts and for leaving a review!