While oven is preheating, place tortillas in a 9x13 baking dish and soften in the warm oven for 5 minutes.
Mix soup, sour cream, and chiles in a medium mixing bowl until well blended.
Fill one tortilla with about 1/2 cup chicken and 2 tablespoons each of the sauce and the Monterey jack cheese.
Roll up the tortilla and place in a lightly greased 9x13 baking dish. Continue until all of the tortillas are in the baking dish. (You may need an extra, smaller dish to fit all of the enchiladas).
Top enchiladas with remaining sauce and sprinkle with remaining jack cheese and all of the cheddar cheese.
Bake, covered with foil, for 25 minutes. Remove the foil for the last 5 minutes of baking.
These enchiladas are delicious plain, but you can also garnish them with toppings like:
Sliced olives
Guacamole
Diced tomatoes
Chopped green onion
Cilantro
Here are some tips for freezing:
Make sure you wrap the freezer-safe pan as tightly as possible. First with plastic wrap and then with foil.
Make sure to drain any liquid off the enchiladas before freezing and wait to top the enchiladas with cheese before baking.
You can choose whether to bake it before or after freezing. Personally, I would freeze it before baking.
If you thaw the enchiladas before baking, you would just bake them according to the directions: 350 degrees Fahrenheit for 25 minutes covered and then an additional 5 minutes uncovered.If you bake them frozen, you'll need to add about 20 minutes of baking time once you've removed the foil.