Keto Steak Tacos (With 2-Ingredient Low-Carb Tortillas)

If there’s one thing I’ve learned on my low-carb journey, it’s that tacos are non-negotiable. And thankfully, these keto steak tacos check every box: juicy marinated steak, sizzling fajita veggies, flavorful seasoning, and soft, low-carb tortillas.

You don’t have to give up Taco Tuesday—or any day, for that matter—just because you’re following a keto or dairy-free lifestyle. In fact, these tacos have become a weekly staple in our house. They’re quick, flavorful, easy to batch cook, and versatile enough to serve the whole family (even my toddler loves them!).

In this post, I’ll show you how to make keto-friendly steak tacos using homemade low-carb tortillas, juicy grilled steak, and seasoned fajita vegetables. They’re 100% gluten-free, dairy-free, and perfect for meal prep or weeknight dinners.

Let’s taco ‘bout it. 🌮

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Why You’ll Love These Keto Steak Tacos

• Ready in 30 minutes
• Customizable with your favorite toppings
• Uses my easy 2-ingredient keto tortillas
• Low-carb, high-protein, and packed with flavor
• Great for meal prep or taco bars

Whether you’re new to keto or just looking for a lighter taco option, this recipe will become a regular on your dinner rotation.

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Ingredients You’ll Need

For the Steak:

• 1 lb flank steak or skirt steak
• 2 tbsp olive oil
• Juice of 1 lime
• 1 tsp garlic powder
• 1 tsp onion powder
• 1 tsp chili powder
• ½ tsp cumin
• ½ tsp salt
• ¼ tsp black pepper

For the Fajita Veggies:

• 1 bell pepper (any color), thinly sliced
• 1 small red or white onion, thinly sliced
• 1 tbsp olive oil
• Salt and pepper to taste

For Assembly:

• 6–8 keto tortillas
• Optional toppings: avocado, salsa, jalapeños, shredded lettuce, lime wedges

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Let’s Talk Steak

The star of this dish is the steak—marinated and grilled (or pan-seared) to tender perfection. I personally love using flank steak or shaved steak for tacos because it cooks quickly and soaks up flavor beautifully.

Here are some tips for taco-worthy steak:

• Marinate for at least 20 minutes, or up to overnight
• Let the steak rest for 5–10 minutes before slicing
• Always slice against the grain for the most tender bite

You can grill it, pan-sear it, or even cook it in a cast-iron skillet on the stovetop. The result? Steak taco heaven.

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Fajita-Style Veggies = Next-Level Flavor

The combination of sautéed bell peppers and onions gives these tacos that authentic Tex-Mex flair—without adding a lot of carbs. Feel free to mix up the colors or even add mushrooms or zucchini if you like.

I like to cook mine in olive oil until slightly charred for a smoky flavor that pairs perfectly with the steak.

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The Tortilla Situation

Let’s be real: tacos are only as good as their tortilla.

I used my 2-ingredient keto tortillas that I made earlier in the week, and they worked perfectly for this recipe. They’re soft, low-carb, and don’t fall apart when you load them up with steak and veggies.

Store-bought low-carb tortillas work too, but if you haven’t made your own yet, trust me—it’s worth it.

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How to Make Keto Steak Tacos

Step-by-Step:

1. Make the marinade. In a bowl, mix olive oil, lime juice, and all the spices. Add steak and let marinate for at least 20 minutes.
2. Cook the steak. Grill or pan-sear over medium-high heat for 4–5 minutes per side (depending on thickness). Let rest, then slice against the grain.
3. Sauté the veggies. In a hot skillet, cook sliced peppers and onions in olive oil until tender and lightly charred, about 8–10 minutes.
4. Warm the tortillas. Heat your keto tortillas in a dry skillet or microwave to soften.
5. Assemble tacos. Layer steak, veggies, and any desired toppings into your tortillas. Squeeze fresh lime juice over the top.

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Toppings & Add-Ins

These keto steak tacos are super flexible. Here are some topping ideas that are low-carb and dairy-free:

• Sliced avocado or guacamole
• Shredded lettuce or cabbage
• Pickled jalapeños or hot sauce
• Fresh pico de gallo or salsa verde
• Fresh cilantro and lime wedges

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Storage & Meal Prep Tips

• Fridge: Store leftover steak and veggies in separate containers in the fridge for up to 3 days.
• Reheat: Warm in a skillet or microwave before assembling tacos.
• Tortillas: If using homemade tortillas, store them in an airtight container in the fridge and reheat before use.

These are perfect for meal prep—just cook everything in advance and build your tacos fresh when you’re ready to eat.

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Recipe Variations

• Use chicken or shrimp instead of steak
• Add cauliflower rice for a taco bowl
• Turn it into a steak taco salad with lime vinaigrette
• Make it spicy with chipotle seasoning or a jalapeño-lime marinade

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Nutritional Info (Per Taco w/ Homemade Tortilla)

• Calories: 220
• Protein: 20g
• Net Carbs: 3g
• Fat: 14g
  (Macros will vary slightly based on your tortilla and toppings.)

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Final Thoughts: These Keto Steak Tacos Are…

✅ Keto-friendly
✅ Dairy-free
✅ Gluten-free
✅ Loaded with flavor
✅ Perfect for any taco night

If you’ve been missing tacos on your sugar-free or low-carb journey—this is your sign. You don’t need cheese or chips to enjoy bold, satisfying flavor. You just need good steak, fresh veggies, and the right tortilla.

Let me know if you try this recipe, and don’t forget to tag me on Instagram @healthyambitionsco if you share your creation!

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Related Recipes:

• 2-Ingredient Keto Tortillas
• Sugar-Free BBQ Chicken Pizza
• Keto Oatmeal Crème Pies