Ingredients: 1cupbutter 1cupsugar 1egg 1teaspoonvanilla extract 1/2teaspoonbaking soda 1/2teaspoonsalt 1/2teaspooncream of tartar 2cupsflour
Directions:
Preheat the oven to 350 degrees F. Line several baking sheets with parchment paper.
Cream butter and sugar; add egg and vanilla and beat thoroughly.
Add dry ingredients and mix. Roll mixture into balls and flatten each on ungreased baking sheet with a glass dipped in sugar.
Bake each sheet of cookies for 8-10 minutes, until the edges are slightly golden and the centers are just barely set. Cool completely on the cookie sheets.