How to Make Steak Fajitas in Cast Iron Skillet

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If you’re looking for a quick and delicious weeknight dinner, cast iron skillet steak fajitas are the way to go. With tender beef, colorful bell peppers, onions, and warm tortillas, this Tex-Mex classic will please the whole family. Skip the long marination time and enjoy this quick and easy fajita recipe instead.

steak fajitas with bell peppers, onions and mushrooms in a cast iron skillet

Why You’ll Love This Recipe

  • Quick and Easy: Pre-cut fajita strips save you time, so dinner is ready in under 30 minutes.
  • Flavorful: A homemade seasoning blend brings bold, delicious flavors to every bite.
  • Customizable: Add your favorite toppings or extra veggies to make it your own.
  • Family-Friendly: This meal is sure to please everyone at the table, from kids to adults.
  • Versatile: Serve with tortillas, over rice, or your favorite side for a satisfying meal.
Chopped vegetables for steak skillet fajitas.

Ingredients for Cast Iron Skillet Fajitas

To make the best steak fajitas, you’ll need the following ingredients:

  • Steak: Pre-cut fajita strips make weeknight dinners easy and quick. They’re already trimmed and ready to season, saving you time while delivering great flavor.
  • Vegetables: Stick with the classic bell peppers and onions, or add mushrooms for extra flavor. You can chop fresh vegetables or opt for a frozen pepper and onion blend for a quicker, more convenient option.
  • Spices: Skip store-bought packets and make a homemade steak fajita seasoning. Combine chili powder, smoked paprika, Mexican oregano, minced onion, garlic, ground cumin, and a pinch of cayenne pepper for a flavorful blend.
  • Toppings: Personalize your fajitas with shredded cheese, guacamole, salsa, sour cream, and fresh cilantro. Other great additions include lime wedges, diced tomatoes, jalapeños, and pico de gallo.

Special Tools (affiliate links): Field No.12 Skillet

cooked steak fajita strips in a cast iron skillet
red and yellow bell peppers on top of cooked fajita steak strips

How to Cook Steak Fajitas in a Cast Iron Skillet

Follow these easy steps to make mouthwatering steak fajitas:

  1. Prepare the Steak: Pat the pre-cut fajita strips dry with paper towels to ensure a good sear and set aside.
  2. Prepare the Vegetables: Slice bell peppers, onions, and mushrooms into thin strips. Remove the seeds from the bell peppers.
  3. Make Fajita Seasoning: In a small bowl, mix chili powder, smoked paprika, Mexican oregano, minced onion and garlic, ground cumin, salt, pepper, and a pinch of cayenne pepper. Set aside.
  4. Cook the Vegetables: Heat a large cast iron skillet over medium-high heat with two tablespoons of oil or butter. Add the vegetables and cook for 5-7 minutes, stirring occasionally. Add half of the seasoning mix during the last two minutes of cooking. Remove the vegetables from the skillet.
  5. Cook the Steak: Return the skillet to medium heat and add two more tablespoons of butter. Add the pre-cut fajita strips, sprinkle with the remaining seasoning, and cook for 3-4 minutes, stirring frequently until cooked.
  6. Combine and Serve: Return the vegetables to the skillet once the steak is done. Toss everything together and serve hot with tortillas and your favorite toppings.
A skillet filled with steak strips and red and yellow bell peppers making fajitas

Tips for Making the Best Cast Iron Skillet Fajitas:

  • Use Pre-Cut Fajita Strips: For an even quicker and easier option, skip the slicing and use pre-cut fajita strips. They’re ready to go, saving you time without sacrificing flavor.
  • Frozen Vegetables: You can chop fresh bell peppers and onions, or for a faster, more convenient option, use a frozen pepper and onion blend.
  • Fajita Seasoning Mix: If you’re really short on time, skip the homemade seasoning and use a package of fajita seasoning mix for a quick and flavorful solution.
  • Preheat Your Skillet: Make sure your cast iron skillet is hot before adding the steak and vegetables to get that perfect sear.
  • Don’t Overcrowd the Skillet: Cook in batches if needed to ensure the fajitas get that crispy, charred texture.

More Delicious Skillet Recipes

Click HERE for 12 + Ground Beef Skillet Recipes for Easy Weeknight Dinners

A skillet filled with steak strips and red and yellow bell peppers making fajitas

How to Make Steak Fajitas in Cast Iron Skillet

This quick and easy fajita recipe uses pre-cut fajita strips, seasoned with a homemade spice blend, and cooked with bell peppers, onions, and mushrooms. It’s a flavorful, customizable meal perfect for busy weeknights.
Prep Time 10 minutes
Cook Time 15 minutes
Total Time 25 minutes
Serving Size 4

Ingredients

  • 2 pounds precut fajita strips
  • 2-3 large bell peppers sliced into thin strips
  • 1 onion sliced into thin strips
  • 8 ounces mushrooms sliced

Fajita Seasoning

  • 1 tablespoon chili powder
  • 2 teaspoons smoked paprika
  • 2 teaspoons dried Mexican oregano
  • 1 teaspoon minced onion
  • 1 teaspoon minced garlic
  • 1 teaspoon salt – more to taste
  • 1/2 teaspoon ground cumin
  • 1/4 teaspoon black pepper
  • 1/4 teaspoon cayenne pepper

Fajita Toppings

  • Warm Tortillas
  • Shredded Cheese
  • Guacamole
  • Salsa
  • Cilantro
  • Sour Cream
  • Lime Wedges
  • Jalapenos
  • Pico de gallo

Instructions

  • Pat the pre-cut fajita strips dry with paper towels to ensure a good sear and set aside.
  • Slice bell peppers, onions, and mushrooms into thin strips. Remove the seeds from the bell peppers.
  • In a small bowl, mix chili powder, smoked paprika, Mexican oregano, minced onion and garlic, ground cumin, salt, pepper, and a pinch of cayenne pepper. Set aside.
  • Heat a large cast iron skillet over medium-high heat with two tablespoons of oil or butter. Add the vegetables and cook for 5-7 minutes, stirring occasionally. Add half of the seasoning mix during the last two minutes of cooking. Remove the vegetables from the skillet.
  • Return the skillet to medium heat and add two more tablespoons of butter. Add the pre-cut fajita strips, sprinkle with the remaining seasoning, and cook for 3-4 minutes, stirring frequently until cooked.
  • Return the vegetables to the skillet once the steak is done. Toss everything together and serve hot with tortillas and your favorite toppings.

Notes

  • Use Pre-Cut Fajita Strips: For an even quicker and easier option, skip the slicing and use pre-cut fajita strips. They’re ready to go, saving you time without sacrificing flavor.
  • Frozen Vegetables: You can chop fresh bell peppers and onions, or for a faster, more convenient option, use a frozen pepper and onion blend.
  • Fajita Seasoning Mix: If you’re really short on time, skip the homemade seasoning and use a package of fajita seasoning mix for a quick and flavorful solution.
  • Preheat Your Skillet: Make sure your cast iron skillet is hot before adding the steak and vegetables to get that perfect sear.
  • Don’t Overcrowd the Skillet: Cook in batches if needed to ensure the fajitas get that crispy, charred texture.

About Sarah

Wife. Mother. From-Scratch Cook. Homemaker.

I’m Sarah, the creator of Rocky Hedge Farm, where I share my love for simple living, homemade meals, and creating a cozy home. As a wife and mother, I’m passionate about slowing down, cooking from scratch, and finding joy in the everyday moments of life. From DIY projects and family-friendly recipes, I hope to inspire others to embrace a life rooted in simplicity and warmth.

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2 Comments

  1. So good! I have looked for a cast iron skillet and had no luck but, it was delicious in my stainless steel.

    Reply