Chicken Breasts with Poblano Chile Strips and Cream

Preparation

1. Step 1

   Lay chiles on their sides on racks of gas burners, then turn flames on moderately high. Roast chiles, turning with tongs, until skins are blistered, 4 to 6 minutes. (Or broil chiles on rack of a broiler pan about 2 inches from heat, turning them, 8 to 10 minutes.) Transfer chiles immediately to a large sealable plastic bag and seal. Let steam 10 minutes, then peel or rub off skins and discard stems, seeds, and ribs. Rinse chiles and pat dry, then cut into 1/4-inch-thick strips.

   Step 2

   Pat chicken dry and season with salt and pepper. Heat 1/2 tablespoon oil in a heavy skillet over moderately high heat until hot but not smoking, then sauté chicken, skin or skinned sides down, until golden, 4 to 5 minutes. Turn chicken over and sauté 2 minutes more. Reduce heat to moderately low, then pour off excess fat and cook chicken, covered, until just cooked through, 10 to 15 minutes.

   Step 3

   While chicken is cooking, heat remaining tablespoon oil in a 10-inch nonstick skillet over moderate heat, then cook onion, stirring, until softened, 5 to 7 minutes. Add chiles and salt to taste and cook, stirring, 5 minutes. Add crème fraîche and cook, stirring, until just heated through (if using sour cream, do not let boil). Season sauce with salt and pepper.

   Step 4

   Drizzle chicken with any pan juices and serve with sauce.