There are several recipes in the web on how to cook Chile Relleno and Casserole. I have my owned recipe of chile relleno and casserole using fresh Poblano peppers stuffed with either shrimps or Crab/lobster meat. It is essentially the same way as in the video below, but instead of just plain Monterey Jack cheese, I add either shrimps ( precooked) or crab or lobster (Shredded - imitation is OK) to the stuffing.
There are several sauces you can used. Since I am lazy, I just used Picante Sauce all ready to use. My daughter used Cholula Sauce. Cholula hot sauce is a brand of chili-based hot sauce, manufactured in Chapala, Jalisco, Mexico, and licensed by José Cuervo. According to its manufacturers, Cholula hot sauce rates 500-1,000 on the Scoville scale though other sources measure it as being over three times hotter, at 3,600 Scoville units.
There are several videos in the Web on how to cook Chile Rellenos and Casserole. The following video is easy to follow:
