Ingredients

2 tablespoons avocado oil (or olive oil)
1 small white onion, peeled and diced
1 1/2 pounds boneless skinless chicken breasts, diced into small 1/2-inch pieces
1 (4-ounce) can diced green chiles
sea salt and freshly-cracked black pepper
1 (15-ounce) can black beans, rinsed and drained
8 large flour tortillas
3 cups Mexican-blend shredded cheese
1 batch red enchilada sauce
optional toppings: fresh cilantro, chopped red onions, diced avocado, sour cream, and/or crumbled cotija cheese

RED ENCHILADA SAUCE

2 tablespoons avocado oil or olive oil
2 tablespoons all-purpose flour
1/4 cup chili powder (see note below)
1/2 teaspoon garlic powder
1/2 teaspoon ground cumin
1/4 teaspoon dried oregano
2 cups chicken or vegetable stock
fine sea salt, to taste

Cook the roux and spices: Heat oil in a small saucepan over medium-high heat. Add flour and cook for 1 minute, whisking constantly. Add in the chili powder, garlic powder, cumin and oregano and cook for 1 more minute, whisking constantly.
Simmer: Gradually pour in the stock, whisking constantly to combine until no lumps remain. Continue cooking until the sauce reaches a simmer. Then reduce heat to medium-low to maintain the simmer (the sauce should continue lightly bubbling) for about 10-15 minutes, uncovered, until the sauce has slightly thickened.
Season: Give the sauce a taste and season with salt, as needed. (I typically add 1/2 teaspoon fine sea salt, but the saltiness of the sauce can vary depending on the brand of stock that you use.)
Serve: Use immediately in your favorite recipe and enjoy!
NOTES
Chili powder (important note): The amount is correct. And as mentioned above, this recipe calls for traditional American chili powder, which is not cayenne. American chili powder is actually a blend of spices that are typically quite mild, whereas international chili powders are usually 100% cayenne (and very spicy). So if you live outside of the United States, please look specifically for an American-style chili powder blend.

Instructions

Prep oven and enchilada sauce. Preheat oven to 350°F. Prepare your enchilada sauce.
Sauté the filling mixture. In large sauté pan, heat oil over medium-high heat. Add onion and sauté for 3 minutes, stirring occasionally. Add diced chicken and green chiles, and season with a generous pinch of salt and pepper. Sauté the mixture for 6-8 minutes, stirring occasionally, or until the chicken is cooked through. Add in the beans and stir until evenly combined. Remove pan from heat and set aside.
Assemble the enchiladas. To assemble the enchiladas, set up an assembly line including: tortillas, enchilada sauce, chicken mixture, and cheese. Lay out a tortilla, and spread two tablespoons of sauce over the surface of the tortilla. Add a generous spoonful of the chicken mixture in a line down the center of the tortilla, then sprinkle with 1/3 cup cheese. Roll up tortilla and place in a greased 9 x 13-inch baking dish. Assemble the remaining enchiladas. Then spread any remaining sauce evenly over the top of the enchiladas, followed by any extra cheese.
Bake. Bake uncovered for 20 minutes, until the enchiladas are cooked through and the tortillas are slightly crispy on the outside. Transfer the baking dish to a wire baking rack.
Serve. Serve the enchiladas immediately while they’re nice and hot and melty, garnished with lots of fresh toppings. Enjoy!

Storage instructions: Leftover (cooked) enchiladas can be transferred to a sealed container and refrigerated for up to 3 days or frozen for up to 3 months.

Make ahead instructions. If you would like to make a pan of enchiladas in advance, follow the recipe instructions through step 3 (assembling the enchiladas). Wrap the pan tightly with foil. Then you can either refrigerate the enchiladas for up to 3 days, then bake as directed. Or you can freeze the enchiladas for up to 3 months, then let them thaw in the refrigerator for 24 hours, then bake as directed.

Mexican