Cook the spinach according to the package directions; drain, and squeeze dry. Beat the eggs in a medium bowl. Add the spinach, onion, cheese, margarine or butter, salt, thyme, pepper and nutmeg, and mix well. Stir in the stuffing mix. Let stand for 20 minutes. Shape the mixture into balls using a rounded teaspoon of the mixture for each ball. Arrange on an ungreased baking sheet, cover, and refrigerate until ready to bake and serve. Bake at 350 degrees for 20 minutes, and serve hot. Makes about 50 balls.