Preheat the oven to 400 degrees F (200 degrees C).
Fill a large pot 3/4 full with water and bring to a boil. Add chicken and season with salt and black pepper. Cook until chicken is no longer pink inside, about 15 minutes.
Meanwhile, bring 1 cup water to a boil in a medium-sized pot. Add tomatillos, serrano pepper, and garlic. Boil for 12 minutes.
Heat a cast iron skillet over medium heat. Place poblano peppers in a resealable plastic bag and add 1 tablespoon oil. Toss to coat. Transfer peppers to the hot skillet and roast until dark brown on all sides, about 5 minutes. Return roasted peppers to the resealable bag and seal. Set aside to steam for 10 minutes. Take out peppers from the bag; remove and discard skins and stems.
Use a slotted spoon to transfer tomatillos, serrano peppers, garlic, and 1/2 cup of the cooking liquid to a blender. Add onion, cilantro, lime juice, roasted poblano peppers, salt, and pepper to the blender. Liquefy into a smooth sauce.
Remove chicken from the water in the pot and shred using a fork.
Heat 1/2 cup oil in a skillet over medium heat. Fry tortillas in the hot oil until softened, about 5 seconds on each side. Transfer to a plate lined with paper towels to absorb excess oil.
Pour 1/2 the sauce from the blender into the bottom of a long glass baking pan. Roll a portion of chicken mixture and some shredded queso cheese on a tortilla, roll up, and place in the pan. Repeat with remaining tortillas, chicken mixture, and queso cheese. Cover enchiladas with remaining sauce. Use a spoon to add crema in a zigzag design on top. Top everything with remaining queso cheese.
Bake in the preheated oven until cheese starts to brown, about 20 minutes.
Nutritional Facts
Per 12 servings
Calories: 476
Carbohydrate: 22g
Fat: 32g
Fiber: 3g
Protein: 27g
Sugar: 1g
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