Chile Rellenos Casserole

8 fire roasted anaheim chiles(red or green)red have more flavor 6 ozs sharp cheddar cheese, cut in fingers to fit chiles(or more) 2 eggs 1 1/2 cups milk 1/2 cup flour (or more, make a batter, not too thick) 1 tsp salt Open the chiles, which have been de-seeded,  and put in cheese, can also add white onion slivers  also at the same time, if desired.  Lay the chiles in a casserole dish which  will hold them(buttered of course)  and cover with this mixture: in a blender  add the eggs and the milk and salt, blend for a  few seconds and then add the flour to make  a batter,pour this over the stuffed chiles, or  chiles rellenos which means just that!  Bake about half an hour or longer until a toothpick comes out clean, in a 350F oven,uncovered. ...let stand to set for about ten minutes  and then serve with my previous Mexican rice!!  This is truly an unforgetable dish, which will make the A list.