Mix margarine and powdered sugar. Add in eggs and beat well. Quickly/lightly mix in vanilla. Mix flour, baking soda and cream of tartar together and then add to the wet ingredients.

Make 1 – 1 1/2″ balls of dough and place on cookie sheet, flatten slightly. Cook at 400 degree for approximately 5-6 minutes until JUST BARELY starting to brown. When just cool, ice with the icing putting a pretty good layer on each. When icing has dried just a bit, store in a container with wax paper or plastic wrap between layers. These will stay soft for days if kept airtight!

Makes about 6 1/2 dozen, unless you make them bigger!