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Chimichurri Steak Tacos

A celebration of flavors featuring tender flank steak, vibrant chimichurri sauce, and an array of delicious toppings, perfect for gatherings or a special taco night.
Prep Time 15 minutes
Cook Time 15 minutes
Total Time 30 minutes
Course Dinner, Main Course, Taco Night
Cuisine Argentinian, Mexican
Servings 4 servings
Calories 450 kcal

Ingredients
  

For the Pickled Onions

  • 1 large red onion, sliced Adds sweetness and texture; feel free to substitute with white onion.
  • 1/2 cup water Used for pickling the onions; can substitute with broth for extra flavor.
  • 1/4 cup white vinegar Gives the pickled onions a tangy kick; can use apple cider vinegar.
  • 1 tablespoon granulated sugar Balances out the vinegar for the pickled onions; honey or agave can work too.

For the Tacos

  • 1.5 pounds flank steak The star of the show! Skirt steak or sirloin can be used as substitutes.
  • 1 each avocado, sliced Adds creaminess; guacamole can be used instead.
  • 1 cup crumbled cotija cheese Elevates the taste; feta or queso fresco are great alternatives.
  • 2 each jalapeños, thinly sliced Adds a spicy kick; can use bell peppers for less heat.
  • 8 each white corn tortillas Homemade or store-bought is fine!
  • 1 bunch cilantro (optional for garnish) Adds a fresh note; can be skipped if not a fan.
  • 1 recipe chimichurri sauce A flavorful must-have for the tacos!

Instructions
 

Pickling the Onions

  • In a small saucepan, combine sliced red onions, water, white vinegar, and sugar. Bring to a boil, then turn off the heat and let sit for at least 15 minutes.

Preparing the Steak

  • Generously season the flank steak with salt and pepper. Let rest while preheating the cooking surface.
  • Preheat a large cast-iron skillet or grill over high heat. Add high-heat oil to coat the surface.
  • Place the steak in the pan and cook for 1 to 2 minutes on each side, creating a char. Sear the edges and check internal temperature aiming for 135°F for medium-rare.
  • Remove the steak from heat and let it rest for at least 15 minutes.

Preparing the Tortillas

  • Preheat the oven to broil. Place tortillas on a baking sheet and broil for about 30 seconds on each side until warm and slightly crisp.

Assembling the Tacos

  • Slice the rested steak into 1/4-inch thick pieces against the grain.
  • Lay a tortilla flat, add sliced steak, top with avocado, crumbled cheese, pickled onions, jalapeño slices, and chimichurri sauce.

Serving

  • Enjoy the tacos with chips, guacamole, and a refreshing margarita!

Notes

For extra flavor, grill tortillas over stovetop instead of oven. Store leftover steak in an airtight container for 3-4 days.
Keyword Chimichurri Steak Tacos, Easy Tacos, Grilled Steak Tacos, Summer Meal, Taco Recipe