Spare Spoons Kitchen
Weeknight · One skillet · About 25 minutes

Steak Fajitas

The quick fajita-style plate — peppers and onions charred hard in a screaming skillet, with Costco's pre-cooked sirloin folded in at the end and a squeeze of lime. Pile into warm tortillas, or build a bowl.

~25 min total 4 servings 1 skillet
Effort ●●○○ Time ●○○○ Anytime
Servingsamounts scale to match
4
Units

Ingredients

Char the vegetables hard, warm the beef gently. The smoky sear that makes fajitas goes on the peppers and onions — get the skillet ripping hot and leave them alone to blister and brown. The pre-cooked sirloin only needs 30–60 seconds tossed in at the end with a squeeze of lime; any longer and it toughens.

Easier, if you like

  • A packet of fajita seasoning stands in for the spice blend.
  • Pre-sliced peppers and onions (produce case, or the freezer's fajita-blend bag) plus Costco's pre-cooked sirloin make this nearly hands-off.

Method

    Cook's notes

    The char is the flavor. A screaming-hot cast-iron skillet (or grill pan) and a single layer are what blister the vegetables; crowd the pan and they steam instead.

    Make it a bowl: skip the tortillas and pile everything over cilantro-lime rice with black beans, avocado, and salsa.

    Toppings make it — sour cream or crema, guacamole, shredded cheese, pico or salsa, and plenty of fresh cilantro.

    The pre-cooked sirloin is the shortcut: it folds in at the end, so dinner is really just charring vegetables and warming tortillas.

    Same Costco sirloin, other nights: French Dip Sandwiches and Beef Stroganoff.

    Make it gluten-free, vegetarian, or vegan

    Gluten-free: use corn tortillas (or serve as a bowl over rice) — the beef, peppers, spices, and lime are naturally gluten-free; check a seasoning packet if you use one.

    Vegetarian / vegan: skip the beef and bulk it up with black beans, sliced portobello, or extra peppers — the charred vegetables and seasoning carry it.