Combine and stir salsa and chiles in medium-sized bowl.
Combine and stir sour cream, beans, and seasoning in a separate medium-sized bowl.
Pour a thin layer of salsa in the bottom of a 9" x 13" freezer pan.
Add a layer of tortillas (cut into strips for even placement) on top of the salsa, followed by a layer of salsa, about 1/3 of the bean mixture, and a cup of cheese.
Repeat the layers two more times: tortilla strips, 1/4 salsa, 1/3 bean mixture, one cup of cheese.
Final layer: Last of tortilla strips, cheese, and salsa.
To freeze: cover with plastic wrap and lid. Thaw in fridge overnight before baking. Bake at 350°F until cheese is melted (about 20-25 minutes).