Ingredients
Method
- Heat oven to 375°F. Line two baking sheets.
- Beat butter and 3/4 cup sugar until creamy. Beat in egg and vanilla.
- Mix flour, cream of tartar, baking soda and salt; stir into butter mixture.
- Mix coating sugar and cinnamon. Roll dough into 24 balls; coat and space 2 inches apart.
- Bake 10–12 minutes until edges set. Cool on sheets 5 minutes; transfer to a rack.