Grilled Flat Iron Steak Fajitas

Christa Arwood


This is one recipe that my kids love. They are always within arms reach when the steaks are being cut up, begging for a bite.


★★★★★ 1 vote

4 -6
1 Hr
25 Min


  • 2
    beef flank steaks
  • 1 Tbsp
    garlic powder
  • 1 Tbsp
    onion powder
  • 1/2 tsp
    cayenne pepper
  • 1/2 tsp
  • ·
    salt and pepper to taste
  • 1-2
    green bell pepper
  • 1
    sweet yellow onion
  • 1 tsp
    vegetable oil
  • ·
    shredded cheddar cheese
  • ·
    shredded lettuce
  • ·
    diced tomatoes
  • ·
    flour totillas
  • ·
  • ·
    sour cream

How to Make Grilled Flat Iron Steak Fajitas


  1. Mix seasonings together and apply liberally to both sides of the steak. Alowl to sit and come to room temperature to avoid the meat shrinking and becoming tough on grill. I usually eyeball my seasonings, but I am estimating the amount I use in the measurements above.
  2. Cut and seed green bell pepper, rub with oil and season with salt and pepper. Cut ends off of onion and peel skin, coat with oil salt and pepper and wrap completely with aluminum foil.
  3. As soon as fire dies down on charcoal grill place your onion on the coals. This will need the most time to cook so as soon as I can I place it in the heat.
  4. Once coals are ready place flank steaks on grill. This meat is lean so there are not normally many flare ups from the fire. Allow meat to cook approx 10 minutes on each side, flipping only once. You want the meat to have a medium center so that it will retain moisture and juiciness. Once you have flipped the meat add your peppers to the grill and char each side. Remove meat from grill and let rest for about 10-15 minutes tented with foil so that juices can recirculate.
  5. Cut steaks in thin strips with a SHARP knife on the bias Cut peppers and onions into strips.
  6. Serve on tortillas and top with cheese, lettuce, sour cream, diced tomatoes, and salsa.

Printable Recipe Card

About Grilled Flat Iron Steak Fajitas

Course/Dish: Beef Steaks and Chops
Regional Style: Mexican

Show 1 Comment & Review

Chili Recipes That Are Super Tasty

Chili Recipes That Are Super Tasty

Weekends these days are for football (fingers crossed) and chili. Fall might be my favorite season. Nothing makes me happier than curling up on the couch with a big bowl of tasty chili on a crisp day. “This chili has the makings of a champion, but it’s so simple,” says Martha Ray Deen (Charlotte, NC) […]

11 Chocolate Cupcake Recipes Every Chocolate Lover Needs

11 Chocolate Cupcake Recipes Every Chocolate Lover Needs

Chocolate cupcakes are a classic dessert and anything but basic. Some are fudgy and moist, while others can be dense and rich. Chocolate cupcakes can be transformed by spices added to the batter, sneaking a surprise in the center, or the creamy frosting piped on top. Full of flavor, if you love chocolate you’re going […]

28 Fall Quick Breads

28 Fall Quick Breads

These quick bread recipes are bursting with fall flavors! Pumpkin, apple, zucchini, pear, cinnamon, caramel, and more make for lovely and easy bread recipes. As the leaves change, you’ll find yourself in the kitchen making one (or 17) of these quick bread recipes.