Name: The Best Steak Fajitas
Prep time: 15 min
Cook time: 30 min
Yield: 15 fajitas
Ingredients: 1 tablespoon cornstarch; 2 teaspoons chili powder; 1 teaspoon kosher salt; 1 teaspoon paprika; 1/2 teaspoon sugar; 1/2 teaspoon onion powder; 1/2 teaspoon ground cumin; 1/4 teaspoon garlic powder; 1/4 teaspoon cayenne pepper; 1 clove garlic (minced); 1 the full amount of the recipe Fajita seasoning (above); 1/4 cup + 1 tablespoon olive oil (divided); 1/4 cup fresh cilantro leaves (chopped, plus more for serving); 1 1/2 pounds hanger, skirt or flank steak (halved crosswise); 2 tablespoons butter; 1 sweet onion (halved and sliced vertically); 1/2 teaspoon kosher salt; 1/2 red bell pepper (seeded and sliced into strips); 1/2 orange bell pepper (seeded and sliced into strips); 2 wedges of lime; 1 avocado (pitted and smashed); 16 warm flour tortillas