Thaw hens by placing in a roasting pan on the bottom shelf of the refrigerator.
Thawing can take a full day.
Heat oven to 350 degrees. Holding the hens over the sink, take each hen out of the package and let the juices drip into the sink. Brush hens with softened margarine and sprinkle with salt and pepper. Place in center of oven and roast for 1 hour and 15 minutes or until hens are golden brown and a meat thermometer inserted in the breast registers 180 degrees. Right after you have put the hens in the oven, throw away the packages and wash the brush and your hands in hot soapy water to get rid of bacteria that can cause food poisoning.