Well, chiles rellenos are not just a Christmas seasonal food since they are available everyday, 24×7 in Guatemala. Last year I described Guatemalan chiles rellenos like this:
Guatemalan chiles rellenos are basically, stuffed chillis, normally bell pepers, jalapeño peppers, and huaque (sp?), depends mostly on what is on season and how spicy you want your chiles rellenos. The stuff in Guatemalan chiles rellenos is a mixture of minced meat, carrots, green beans and other spices; all of that covered in an egg batter, and fried.
But I am sure Claudia and other can do a much better job describing it and perhaps, providing recipes in English. Please, if you know how to better describe it or would like to share your family recipe for making chiles rellenos or any of the Guatemala dishes I show here, please, do so in the comments. We all benefit from sharing… I’d like to think I am already doing my part.