A soft, tangy sugar cookie coated in cinnamon sugar. The tang comes from cream of tartar, which is the defining ingredient.

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9 items
and sugar (1.5 cups) together until light and fluffy
Add eggs and vanilla extract. Beat well
Mix the all purpose flour, cream of tartar, baking soda, and salt. Add to wet ingredients
Mix the coating sugar and cinnamon in a small bowl
Shape dough into 1.5 inch balls. Roll in cinnamon-sugar mixture
Bake at 400°F (200°C) for 8-10 minutes on an ungreased baking sheet
Cool on the sheet for a few minutes before removing