Flank steak is a popular choice for fajitas due to its rich and flavorful taste. However, it can be a tough cut of meat if not prepared correctly. To ensure your flank steak turns out tender and delicious, you’ll need to follow some simple steps to tenderize it.

Step 1: Marinate the Flank Steak
One of the easiest ways to tenderize flank steak is by marinating it. A marinade is a mixture of acidic ingredients like vinegar or citrus juice, oil, herbs, and spices that help break down the muscle fibers in the meat.

To make a marinade for flank steak fajitas, combine lime juice, olive oil, garlic, cumin, chili powder, salt and pepper in a bowl. Place the flank steak in a large resealable plastic bag and pour the marinade over it. Seal the bag tightly and refrigerate for at least 30 minutes or overnight.

Tip: Use a meat mallet or fork to pierce the surface of the flank steak before marinating it. This will allow the marinade to penetrate deeper into the meat.

Step 2: Cook on High Heat
Another way to tenderize flank steak is by cooking it on high heat for a short period of time. This method helps sear the outside of the meat while keeping the inside moist and juicy.

Heat up your grill or skillet until hot and place your marinated flank steak on top. Cook for about 4-5 minutes on each side until nicely browned.


Don’t overcook your flank steak! It should be cooked to medium-rare or medium at most as anything more than this will result in tough meat.

Step 3: Cut Against The Grain
After cooking your flank steak fajitas, let them rest on a cutting board for a few minutes. This will allow the juices to redistribute throughout the meat, making it more tender.

When ready to serve, take a sharp knife and cut against the grain of the meat. This means slicing perpendicular to the lines or fibers of the steak. Cutting against the grain helps break down these muscle fibers, resulting in a more tender and enjoyable eating experience.


Tenderizing flank steak for fajitas is easy when you know what to do. Marinating the meat, cooking it on high heat, and cutting against the grain are all effective ways to make sure your flank steak is juicy and delicious every time. So go ahead and try out these tips for your next fajita night!