Easy Chiles Rellenos Casserole

Directions

1. 1
   Preheat oven to 350 degrees F.
2. 2
   Spray an 8-inch square casserole dish or baking pan with nonstick spray, or lightly rub with oil.
3. 3
   In a mixing bowl, combine egg whites, evaporated milk, and flour, whisking to blend.
4. 4
   Place half the chiles in the casserole dish, and cover with half of the egg mixture.
5. 5
   Reserving 1/2 cup of each type of cheese for topping, sprinkle the 1/2 of the remainder of the cheese over chiles.
6. 6
   Layer again with the chiles, top with the remaining egg mixture, the other half of the cheese, and then cover that with the tomato sauce.
7. 7
   Place the casserole in the preheated oven and bake for 25 minutes; then sprinkle the reserved cheese (1/2 cup of each) on top of the rellenos.
8. 8
   Replace in the oven and continue to bake for an additional 20-25 minutes or until the edges are bubbly, and the cheese is nicely melted.
9. 9
   Allow to rest 5 minutes or so before slicing into servings.