I use my solar oven for this delicious casserole with a Mexican flair. But you can use a regular electric or gas oven as well. ~TxH~
Chop cooked chicken breasts into cubes (or about 3 cups, cubed) and set aside.
Make casserole filling by sauteing onion and garlic in a small amount of oil until translucent.
Then add 1 un-drained can diced tomatoes, 1 can green enchilada sauce, 1 can Cream-of-Chicken soup and 1 can drained chopped green chiles.
When heated through add cubed cooked chicken and stir gently - heat until warmed through.
In a casserole dish spread just enough sauce to coat bottom of dish. Then layer 3 corn tortillas on top of sauce.
Ladle 2 cups meat mixture on top of tortillas and spread to edges of dish. Sprinkle 1/2 cup cheese over all.
Place in preheated 350℉ oven until cheese is melted, about 15 - 20 minutes.
SOLAR COOKING: If cooking chicken in a solar oven, season & place in covered dish in Sun Oven until temperature probe placed in thickest part of chicken reads 165℉. My solar oven took about 1.5 hrs on a partly-cloudy day.
Assemble the casserole and return covered baking dish into pre-heated solar oven. Try to maintain about 350 degrees for about 15-20 minutes, or until cheese is melted.