Budín Azteca (Layered Tortilla Casserole) | Saveur

Ingredients

• One 3–4-lb. chicken
• ¼ cup coarsely chopped cilantro
• 2 bay leaves
• 2 celery stalks, coarsely chopped
• 2 garlic cloves
• 1 large carrot, coarsely chopped
• 1 dried Mexican chile, such as morita
• 1 large onion, quartered
• 2 quarts chicken stock, store-bought (low-sodium) or homemade
• Kosher salt and freshly ground black pepper
• 20 tomatillos (2½–3 lb.), husked and rinsed
• ½ tsp. sugar
• Kosher salt
• 1½ large white onions, divided
• Vegetable oil
• 10 poblano peppers (1½ lb.)
• 1 medium zucchini, finely chopped
• 1 medium yellow squash, finely chopped
• 30 corn tortillas
• 2 cups crema or sour cream, divided, plus more for serving
• 1 cup asadero cheese, coarsely grated
• 1 cup Oaxaca cheese, coarsely grated