This recipe works with lots of different kinds of chiles. Roast peppers so that
the skin blisters, then peel off most of the blistered skin. If using dried ancho/poblano
peppers, soak them in hot water until soft. Remove stem and seeds, and continue
with the recipe.
Split chile peppers lengthwise and remove seeds and pith. Spread chiles in a
single layer in a greased 9 x 13-inch baking dish. Sprinkle the green onions, cilantro
and most of the cheese (reserving some for the top) over chiles.
In a bowl, beat eggs, milk, flour, and salt together until smooth. Pour over
chiles and cheese.
Bake at 325 degrees F for 40 minutes or until a knife inserted in custard comes out clean.
Sprinkle remaining cheese over casserole and return to oven for 10 minutes or
until cheese melts. Let stand for 5 minutes before serving.