Make the sauce
Stem, seed, and rinse the chiles. Put the chiles, garlic, oregano, and 3 cups water in a 3-quart saucepan over medium heat. Bring to a boil and reduce the heat to low. Simmer, stirring occasionally, until the chiles and garlic are very tender, about 30 minutes. Remove from the heat, cover, and let stand for 30 minutes. Purée in a blender.
Heat the olive oil in a 4-quart saucepan over medium heat. Add the flour and stir until it begins to color, 2 to 3 minutes. Carefully stir in the chile mixture—it will spatter—and bring to a boil. Stir in the sugar and 2 tsp. salt. Keep warm.
Make the Filling
Heat the olive oil in a 12-inch skillet over mediumhigh heat. Add the onion and cook, stirring, until nicely browned, about 11 minutes. Add the garlic and cook, stirring, for 2 minutes. Add the cumin and cook until fragrant, about 30 seconds. Add the pumpkin and stir to coat. Lower the heat to medium, add the broth, cover, and simmer until the pumpkin is just tender, about 10 minutes. Stir in the turkey (if using) and season to taste with salt. asse mble
Position a rack in the center of the oven and heat the oven to 350°F. Brush a 9x13-inch baking dish with olive oil. Spread 3/4 cup of the sauce evenly over the bottom of the dish. Heat a griddle or cast-iron skillet over medium-high heat and brush lightly with oil. One at a time, heat 5 tortillas until softened and pliable, about 1 minute per side. Arrange the griddled tortillas over the sauce in the pan (you can cut them to fit if necessary). Spread 1/2 cup sauce over the tortillas. Spoon the filling evenly over the sauce and top with 1 cup cheese. Drizzle 1/2 cup of the sauce over the cheese. Heat the remaining tortillas on the griddle. Arrange the tortillas evenly over the sauce, filling, and cheese. Spread the remaining sauce over the tortillas and sprinkle withthe remaining cheese. Bake until the cheese bubbles and the casserole is heated through, 30 to 35 minutes. Let sit for at least 10 minutes before serving with the salsa and crema.
Serve Cold Avocado Soup with Chile-Lime Pepitas or Chunky Guacamole with Homemade Tortilla Chips while the casserole is cooling. Gorditas de Piloncillo (Sweet Fried Masa Cakes) with Mexican Hot Chocolate make for a sweet finish.
nutrition information (per serving):
24, Fat Calories
220, Saturated Fat
30, Monounsaturated Fat
42, Polyunsaturated Fat
Photo: Scott Phillips