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Flank Steak Fajitas | Marinated and grilled beef wrapped in a tortilla for an easy #WeekdaySupper

Grilled Flank Steak Fajitas

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Grilled Flank Steak Fajitas make a flavorful and healthy beef entree. After marinating in lime juice and spices and tossed on the grill, delicious slices of flank steak are wrapped in warm flour tortillas for a quick, tasty meal.  This post is sponsored by the Beef Checkoff. See details below.

Flank Steak Fajitas

Grilled Flank Steak Fajitas

I live with a carnivore. The hubby loves meat and especially beef. Luckily there are so many lean cuts of beef that can be transformed into a healthy main dish.  So Bill gets his meat and I get a well-rounded meal.

To amp up the flavor when using a leaner cut, like with this grilled flank steak fajitas recipe, I often mix up a quick marinade, add the beef and let it sit overnight in the fridge. Unlike other proteins, beef can hold up to a longer marinating time which ensures more flavor penetration.

With flank steak, I also score the exterior with a sharp knife, to assist with osmosis. Then when it comes time for dinner, all the hubby has to do is toss the meat on the grill and cook to perfection.

Flank Steak Fajitas

Beef Fajitas: an Easy Weeknight Meal!

As long as it’s grilling weather, fajitas frequently appear on our menu. And grilling season only dies when there’s a foot of snow on our Green Egg and/or subzero temperatures! Yes, the man in charge of the grill is not always rational!

Having a marinated flank steak parked in the fridge makes dinner time a breeze. While Bill fires up the grill, I saute some onions and peppers, cut up a few tomatoes and an avocado, and pull out some guacamole, salsa and sour cream. Choose whatever toppings tickle your fancy. I use a whole grain tortilla and pile on the veggies plus a few slices of beef. The hubby goes heavier on the beef, as a true carnivore would.

Don’t forget beef when you’re planning a healthy meal. There are tons of options as you’ll see with the #WeekdaySupper posts this month. Just round out the meal with loads of veggies and some whole grains. Even my picky husband is satisfied with this formula.

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Learn More About Using Beef in a Healthy Diet:

Make sure to follow The Beef Checkoff’s social media sites for more recipes and inspiration:

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Find out more about Beef as a part of a healthy plate here:

Beef Nutrition Facts

Beef’s Big 10 Nutrients

Interactive Butcher Counter to help choose lean cuts

Plus you’ll definitely want to follow our Pinterest Board for some spectacular recipes: Healthy Meals with BeefFlank Steak Fajitas

Additional Quick and Healthy Entrees for your #WeekdaySupper:

Monday – Beef and Quinoa Soup from Feeding Big

Tuesday — Steak Chevillot from Cosmopolitan Cornbread

Wednesday – Crockpot Balsamic Roast Beef from Casa de Crews

and Friday – Easy Beef Marsala Bowls from Family FoodieFlank Steak Fajitas

Yield: 6 servings

Grilled Flank Steak Fajitas

Grilled Flank Steak Fajitas

A healthy, delicious meal featuring grilled flank steak.

Prep Time 20 minutes
Cook Time 20 minutes
Total Time 40 minutes


  • 1 1/2 pounds flank steak


  • Juice of 2 limes
  • 1 tablespoon olive oil
  • 1/4 cup chopped cilantro
  • 1/2 jalapeno, minced
  • 1 clove garlic, minced
  • 1/2 teaspoon ground cumin
  • 1 teaspoon kosher salt
  • Freshly ground black pepper, to taste

Peppers and onions:

  • Olive oil
  • 3 bell peppers, seeded and sliced
  • One yellow onion, cut in half and sliced
  • 1/2 teaspoon cumin
  • 1/2 teaspoon dried oregano
  • Kosher salt and pepper to taste
  • Juice of half a lime


  • Avocado slices or guacamole
  • Cilantro
  • Halved cherry tomatoes or tomato salsa
  • Sour cream
  • Flour tortillas, warmed


  1. Stir the lime juice, oil, cilantro, jalapeno, garlic, cumin, salt, and pepper together.
  2. Put the steak in a large zip-lock bag and pour the marinade over the meat.
  3. Park in the fridge for a few hours or overnight.
  4. To serve, heat a tablespoon of olive oil in a non-stick pan and add onion and pepper slices. Sprinkle with cumin, oregano, salt and pepper. Saute till onions and peppers are tender and slightly browned. Squeeze the juice of half a lime and cook a minute or so longer.
  5. Remove flank steak from the refrigerator and let sit at room temperature for a half hour to take the chill off the meat.
  6. Grill to desired doneness, then let rest 10 minutes before slicing thinly across the grain.
  7. Place flank steak strips, onions and peppers along with desired toppings in the middle of a tortilla. Roll and serve.


Adapted from The New Basics Cookbook.

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If you’re looking for more quick and easy Weekday Supper recipes, check out our current Weekday Supper Menu, or drop by our Weekday Supper Pinterest board for more ideas!

Disclosure: This post is sponsored by The Beef Checkoff in conjunction with a social media campaign through Sunday Supper LLC. All opinions are my own.

Note: This post may contain affiliate links; view my Disclosure Policy for details. I earn a small percentage from any purchase you make by clicking on these links at no extra cost to you.

33 comments on “Grilled Flank Steak Fajitas”

  1. Hello Lizzy! Fajitas is one of my regular orders when I eat at Chilis. Well, it’s great that you make this at home. I should do that too!

  2. I love that you can use such a lean cut of beef for fajitas. And I’m always going to chose wholesale tortillas as I’m not a fan of the plain white ones. Great recipe, thank you for sharing. Sammie

  3. Fajitas are always a favorite Liz! Keep that grill going:@)

  4. This is my kind of dinner! I love fajitas, and your marinade sounds so flavorful!

  5. I’m ready to fire up the grill to make these. Yummy!

  6. The beef looks so tender and juicy. A great dinner!

  7. This is what I want for dinner tonight. Looks Great!

  8. My husband is a big meat eater too. He’d love these.

  9. My husband loves the BBQ as well and while we don’t get snow, we do get rain. He goes outside to BBQ with the tongs in one hand and a golf umbrella in the other. I do like the sound of your marinated steaks with all the vegetables for the fajitas xx

  10. Lizzy,
    The hubby and I love, I mean really love, fajitas. I’ve never made them at home but I have to try this recipe.

  11. Liz this looks absolutely delicious. Do you know you’re the reason I love flank steak so much. We never ate it growing up and it used to be really hard to find here in Canada. They label things differently here and some cuts aren’t as popular here for some weird reason. I finally found it after reading one of your blog posts years ago. I found it at Costco of all places. We’ve been hooked on it every since. So thank you for introducing me to it. It’s quickly become one of our favourites.

    Now I’m craving fajitas.

  12. We love beef fajitas as well. Like Bill, my husband could eat beef every night. Your platter looks beautiful! Isn’t it amazing how just the simple marinade of lime juice and olive oil can transform beef into an incredibly tasty dish? This looks wonderful.

  13. Fajitas are a favourite over here too but we always choose chicken. I’m going to try beef next time because we love steak.

  14. Steak! Anything with steak is really good 😀

  15. Sounds like a great dinner to me, I think flank is a slightly cheaper cut too which is great!

  16. Great idea for a fast and easy dinner!

  17. Haha! I live with a carnivore too. Looks good, Liz! Have a great weekend, my friend.

  18. I love Fajitas, Liz. And homemade are the best. This looks so delicious. I will try it sometime!

  19. Totally yummy! I love a good plate of fajitas. This looks like it’d make some amazing fajitas, or even a great fajita salad! Love how tender the beef looks!

  20. Perfect meat, Liz. Looks great!

  21. I have never made fajitas at home, seems complicated, but now how you show it. Just need a grill back a again! Looks great.

  22. Love all the colors in this fajita. Looks delicious.

  23. This looks delicious! I could go for some fajitas right about now

  24. Love all the colors of this dish, looks healthy and delicious!

  25. OMG, I’m also talking about flanks but a different kind. Gosh, please don’t eat me! Hahaha! Love your recipe! Happy weekend, dear! xoxo

  26. The steak looks perfect Liz! My husband is a big meat eater too and these fajitas would be a big hit at our house!

  27. Love fajitas! I like go to eat them in a mexican food truck in my town! But yours looks great ! I would like to try them right now even is not time to lunch ! Have a great weekend! xo

  28. Im so into spices right now – fajitas are right up my street and these look awesome!

  29. This is such a tasty looking platter of deliciousness. There is nothing better than perfectly cooked beef and fajitas!

  30. If fajitas are on the menu, I always order them but I rarely make them at home. I think maybe twice in my life. I don’t know why and now that’s what I want for dinner tomorrow so thanks for sorting that out for me. 🙂

  31. My son and hubby would do a definite happy dance for this meal. 🙂

  32. Order for two, please and thank you!

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