Preheat the broiler. Line a rimmed baking sheet with foil and set the bell, poblano, fresno, and serrano peppers on it. Rub the peppers with the oil. Place under the broiler and cook the peppers, rotating as needed, until evenly charred all over, about 10 minutes. Transfer the charred peppers to a large bowl and cover with plastic wrap to steam.
Published at Mon, 02 Apr 2018 12:58:22 +0000