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~
Cool and cut 3 medium chicken breasts into cubes (or about 3 cups, cubed) and set aside.
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.