Preheat oven to 375℉. Prepare your ingredients. Chop the onion. Mince the garlic. Using a box shredder, grate the cheddar cheese.
Brown the Meat
In a large skillet, brown ground beef and saute the chopped onion and minced garlic until tender. Add soy sauce, chili powder, ground cumin, dried oregano, kosher salt and freshly ground black pepper.
Prepare the Sauce
In a large bowl, combine the enchilada sauce, green chilis, cream of mushroom soup, and black beans.
Assemble the Casserole
Spray an oblong baking pan with cooking spray. Pour 1/2 cup of enchilada sauce mixture on the bottom of the pan. Place a layer of corn tortillas over that and top with 1/3 beef mixture, 1/3 sauce, and 1/3 cheese. Repeat layers two more times.
Cover and bake in preheated oven for 25 minutes. Uncover and bake another 10-15 minutes until cheese is lightly browned and bubbly. If desired, serve with lettuce, tomatoes, sour cream, and guacamole. Serves 8-10.