A lady my parents used to go camping with would make one. It was one bag of frozen hash brown cubes, southern style I think is what it is called. 1 can cream of Mushroom, 1/4 to 1/2 cup of milk salt and pepper, I use other spice mixes I have mixed together, and bake at 375 for 45 min to 1 hour, depending on your altitude and humidity.
Oh hell I almost forgot, I also add shredded cheese to the mixture and I sprinkle some on top, actually a thick layer and a whole lot of cheese, DH is a cheese freak, I cover with foil and uncover the last 10 minutes or so.
at 5:42 PM on Sep. 13, 2010