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Close-up of steak fajita nachos topped with jalapeños, tomatoes, onions, guacamole, sour cream, and cilantro, all served on a foil-lined tray.

Steak Fajita Nachos

Mandy Applegate
Steak fajita nachos are a flavor-packed favorite you’ll want to make on repeat! Perfect for game day appetizers or a weeknight dinner, this recipe combines sizzling fajita flavors with gooey, melty cheese on a bed of crispy tortilla chips. It’s quick to prepare, loaded with fresh ingredients, and delivers big on taste.
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Prep Time 30 minutes
Cook Time 20 minutes
Total Time 50 minutes
Course Appetizer, Main Course
Cuisine Mexican
Servings 6
Calories 655 kcal

Ingredients
 
 

  • 1 bag corn tortilla chips
  • 1 pound flank steak cut into ½” thick slices
  • 1 red bell pepper sliced
  • 1 green bell pepper sliced
  • 1 medium white onion sliced
  • 1 cup Mexican blend cheese shredded
  • 1 cup queso blanco cheese dip
  • 1 ounce packet fajita seasoning
  • 2 tablespoons olive oil

Topping Ingredients:

  • 1 tomato chopped
  • 3 tablespoons cilantro chopped
  • ½ cup sour cream
  • ½ cup guacamole
  • 1 lime
  • 1 jalapeño sliced

Instructions
 

  • Add steak and fajita seasoning to a medium bowl and combine. Add a tablespoon of water if the seasoning is too thick. Cover with plastic wrap and refrigerate for 15 minutes.
    1 pound flank steak, 1 ounce packet fajita seasoning
  • Preheat the oven to 400°F (200°C) and line a baking sheet with aluminum foil.
  • Heat oil in a large skillet over medium-high heat. Once hot, add the steak in a single layer. Cook for 2 minutes, then flip and continue cooking for 1 minute until both sides are slightly browned.
    2 tablespoons olive oil
  • Add vegetables and cook for 5 minutes or until tender and the steak is cooked through. Remove from heat. Cover to keep warm.
    1 red bell pepper, 1 green bell pepper, 1 medium white onion
  • Spread chips in a single layer on the baking sheet. Top with shredded cheese and queso blanco.
    1 bag corn tortilla chips, 1 cup Mexican blend cheese, 1 cup queso blanco cheese dip
  • Bake uncovered for 8 to 10 minutes until the cheese is melted and the chips begin to brown.
  • Remove from the oven and spread the steak fajitas evenly over the chips.
  • Top with the tomatoes, jalapeño, dollops of guacamole, and dollops of sour cream. Squeeze lime juice over the top and garnish with cilantro.
    1 tomato, 3 tablespoons cilantro, ½ cup sour cream, ½ cup guacamole, 1 jalapeño, 1 lime
  • Serve and enjoy!

Notes

  • Steak: Flank steak, skirt steak, or even flap steak work beautifully. Just be sure to slice the beef thinly against the grain for tender bites.
  • Veggie prep: Keep the bell peppers and onions in similar-sized slices for even cooking.
  • Cheese: A Mexican blend is a classic choice, but feel free to experiment with cheddar cheese, Monterey Jack, or pepper jack for extra flavor.
  • Spice it up: Add a pinch of chili powder or cumin to the steak for a little extra kick.
  • Customize your toppings: Swap sour cream for Greek yogurt, add pickled jalapeños and salsa, or throw on some diced avocado for even more flavor.
  • Crowd-friendly tip: Set up a toppings bar so everyone can build their perfect plate of nachos.
  • Chicken option: Swap out the steak for chicken breast or thighs, sliced thin. Follow the same steps for seasoning and cooking.
  • Vegetarian option: Skip the steak and load up on extra veggies like mushrooms, zucchini, or black beans for a hearty vegetarian version.

Storage and Reheating Options

  • Fridge: If you can, store the toppings, steak, and chips separately for best results.
  • Reheat: Reheat the steak and veggies in a skillet and crisp the chips in the oven. Reassemble just before serving to avoid sogginess from the chips. If you've not managed to store everything separately, just reheat it all together in the oven or air fryer.

Nutrition

Calories: 655kcalCarbohydrates: 51gProtein: 31gFat: 38gSaturated Fat: 13gPolyunsaturated Fat: 7gMonounsaturated Fat: 12gTrans Fat: 0.04gCholesterol: 98mgSodium: 1393mgPotassium: 759mgFiber: 7gSugar: 8gVitamin A: 1870IUVitamin C: 56mgCalcium: 463mgIron: 3mg
Keyword steak fajita nachos
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