01 -
Preheat the oven to 232°C.
02 -
Place the flank steak on a large baking sheet. Season both sides with 1.5 tablespoons of fajita seasoning, drizzle evenly with lime juice and 1 tablespoon olive oil.
03 -
In a large bowl, combine the green, red, and yellow bell peppers with the onion. Season with the remaining 1.5 tablespoons fajita seasoning and drizzle with the remaining 1 tablespoon olive oil. Toss thoroughly.
04 -
Arrange the seasoned vegetables around the flank steak on the baking sheet in a single layer.
05 -
Transfer the baking sheet to the oven and bake for 12–15 minutes, or until the steak reaches your desired doneness. For a charred finish, use the broiler setting for the final 1–2 minutes if desired.
06 -
Remove the baking sheet from the oven. Cover the steak loosely with aluminum foil and let it rest for 5–10 minutes. Slice the steak thinly against the grain.
07 -
Serve the steak and vegetables with warm flour tortillas, guacamole, salsa, and sour cream as desired.