Heat oven to 400 degrees. Prick shell and bake for 15 minutes. Remove from oven . In a frying pan, melt the butter. Add the onions and cook until soft. Squeeze the spinach to remove the moisture and add to the onions and stir. Remove from heat. Add remaining ingredients in a large bowl and mix well. Add spinach and onion mixture and mix well. Pour into baked shell. Bake at 180ºC or 40 t o 45 minutes or until top is golden brown. Serves: 6 to 8. Recipe from "One Mil lion Recipes CD" busted by Judy R.