Slice squash into half moons.
Place squash and peppers on a cooking oil sprayed, foil lined baking sheet.
Top with onions.
Roast squash, peppers, onion at 400 for 30 minutes or until done, stirring half way through cooking time
Mix soup with undrained Rotel Tomatoes and Green Chiles
Put 1/4 of the soup mix on the bottom of a greased casserole dish.
Spread each tortilla or lasagna noodle with cottage cheese.
Add a layer of tortillas or noodles, cheese side up, cutting tortillas to fit.
Top with a layer of roasted vegetables and sprinkle with Manchego.
Repeat layers, ending with plain tortillas, cottage cheese side down.
Pour remaining soup mixture on top and sprinkle with additional Manchego.
Casserole can be covered and refrigerated at this point up to 24 hours.
Bake at 350 for 45 minutes until bubbly and golden. Shorten cooking time if baking immediately after assembly