Preheat the oven to 350°F. Spray a 9 x 13 (deep) baking dish with cooking oil.
In a large pot, heat the avocado oil over medium heat. Add the onion and sauté until tender, about 4 minutes.
Next add the ground beef and cook until browned. Crumble with a spatula to small pieces. Drain off any grease.
In the same pot, add broth, beans, mushroom soup, salsa verde, enchilada sauce, sour cream, paprika, garlic salt, and pepper. Stir until combined. Over medium heat, bring the beef mixture to a simmer.
Stir in the chiles, tortilla strips, 4 cups of Cheddar and ½ cup of Monterey Jack cheese until well combined.
Pour the mixture into the prepared baking dish and sprinkle the remaining Monterey Jack cheese. Bake until heated through for 25-30 minutes. The cheese will be melted and the casserole will be bubbly.
Remove from the oven and sprinkle the Cotija cheese, along with a small amount of finely chopped cilantro - for garnish.
Let stand for 10 minutes before serving.
Optional to serve with other toppings like jalapeno, diced red onions, sliced olives, diced tomatoes, more sour cream, salsa, and guacamole. Set out a good hot sauce.