Easy Steak Fajitas

Mexican food need not be unhealthy or high carb! These delicious steak fajitas are ready fast. They are keto, colorful, and very nutritious.

Intensely flavorful and spicy but not too hot, these homemade steak fajitas are ready fast. I make them often because they are so easy to make and so very tasty, and my entire family enjoys them.

The ingredients you’ll need

The list of ingredients is simple. Yes, you need quite a few spices. But the flavor is well worth it! Here’s what you’ll need (exact measurements are in the recipe card below):

1. Spices: salt and pepper, chili powder, smoked paprika, garlic powder, dried oregano, and red pepper flakes.
2. Bell peppers
3. Onion
4. Sirloin steak
5. Olive oil

How to make steak fajitas

It’s easy! Scroll down to the recipe card for the detailed instructions. Here are the basic steps:

1. Your first step is to mix the spices together.
2. Next, season the sliced peppers and onions with half the spice mix.
3. Now season the sliced beef with half the spice mix.
4. Cook the vegetables in olive oil, then remove to a plate.
5. In the same skillet, cook the beef, then add the vegetables back and cook until heated through.

How do you make steak fajitas tender?

Marinating the steak helps to tenderize it. But if you use top sirloin strips, which are not super tender but also not very tough, you can actually skip the marinade.

Simply season the beef and the vegetables well, saute them quickly, and the dish will turn out just as delicious and flavorful as if you’ve made it with marinated steak.

And if you’re willing to use beef tenderloin in this recipe, it will turn out even more tender.

Low carb or keto Mexican food is not an oxymoron

I used to think that Mexican food had to be high in carbs. Tortillas, rice and beans (plus corn) seemed to be an integral part of this tasty cuisine. But then I discovered fajitas. Boom!

These days, when I go out to a Mexican restaurant, I ask for a fajita mix – beef, chicken, and shrimp. Hold the tortillas, beans and rice.

I also ask for extra sour cream, cheese, and guacamole. It’s a full, satisfying, delicious meal. And it’s low in carbs and gluten-free.

How to serve steak fajitas?

The classic choice would be flour tortillas (possibly low carb). But for a low carb and gluten-free option, you can serve them on a bed of cauliflower rice or shredded lettuce.

But it’s not really necessary. They are great served on a plate and eaten with a fork and a knife. And that’s how I usually serve them.

What about leftovers?

If you have any leftovers, they keep well in the fridge for 3-4 days in an airtight container. Gently reheat them the microwave on 50% power prior to serving.

A chicken Alternative

Personally, I am partial to beef. But if you’d rather use chicken, check out this easy recipe for super tasty chicken fajitas!

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4.97 from 91 votes

Steak Fajitas

Mexican food need not be high carb! These delicious steak fajitas are ready fast. They are low carb, colorful and very nutritious.

Prep Time15 mins

Cook Time15 mins

Total Time30 mins

Course: Main Course

Cuisine: Mexican

Keyword: beef, steak

Servings: 4 servings

Calories: 335kcal

Author: Vered DeLeeuw

INGREDIENTS

Seasoning mix:

• 1 teaspoon fine sea salt
• 1/4 teaspoon black pepper
• 1 tablespoon chili powder
• 1 teaspoon smoked paprika
• 1 teaspoon garlic powder
• 1/2 teaspoon dried oregano
• 1/2 teaspoon red pepper flakes

Fajitas:

• 3 large bell peppers, cut into thin strips
• 1 large onion, thinly sliced
• 1.5 lb. sirloin steak, cut into thin strips (I buy mine pre-cut)
• 2 tablespoons olive oil

INSTRUCTIONS

• In a small bowl, mix together the seasoning ingredients.
• Place the sliced vegetables in a large bowl. Sprinkle with half the seasoning mix. Use your clean hands to rub the spices into the vegetables.
• Place the steak slices in a medium bowl. Sprinkle with the remaining seasoning mix. Use your clean hands to rub the spices into the meat.
• Heat the olive oil in a large, deep skillet over medium-high heat, about 2 minutes. Add the bell peppers and the onion. Cook, stirring often, until just tender, about 5 minutes. Remove the vegetables to a plate.
• Add the steak slices to the same skillet. Stir-fry just until no longer raw, 2-3 minutes.
• Return the vegetables to the skillet. Stir-fry everything together 1-2 more minutes, just until heated through.
• Spoon the fajitas into warm tortillas, or skip the starch as I do and and serve the fajitas in bowls, drizzled with the yummy pan juices, and topped (if you wish) with salsa, guacamole, sour cream and/or shredded cheddar.

NUTRITION INFO Nutrition info is approximate and may contain errors. It is calculated using the SparkPeople.com recipe calculator, and the carb count excludes sugar alcohols. Please feel free to make your own calculations. Please read the disclaimers in our Terms of Use carefully before using any of our recipes. Recommended and linked products are not guaranteed to be gluten-free. Please verify they are before using.

Nutrition Facts

Steak Fajitas

Amount Per Serving

Calories 335 Calories from Fat 126

% Daily Value*

Fat 14g22%

Saturated Fat 3g19%

Sodium 397mg17%

Carbohydrates 12g4%

Fiber 3g13%

Sugar 4g4%

Protein 39g78%

* Percent Daily Values are based on a 2000 calorie diet.

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