Ingredients
Method
- Heat oven to 375°F (190°C); line two baking sheets with parchment.
- Beat softened butter and 1 1/2 cups sugar until light and fluffy ~2 min; beat in eggs one at a time, then vanilla, until smooth.
- Whisk flour, cream of tartar, baking soda, salt in a medium bowl; stir into butter mixture until a soft dough forms.
- Stir the 1/4 cup sugar and cinnamon together in a small bowl for rolling.
- Roll dough into balls about 1 1/4 inches across (roughly 1 1/2 tablespoons each); roll each in cinnamon sugar until well coated; place 2 inches apart on prepared sheets.
- Bake 8–10 min until puffed and crackled on top with just-set edges; centers will look soft — that is exactly right.
- Rest on pan 5 minutes (they finish setting here and stay soft), then move to a wire rack to cool.
Notes
Storage: keep in an airtight tin at room temperature up to 1 week. They stay soft for days thanks to the cream of tartar.
Freeze: freeze the rolled, coated dough balls up to 3 months; bake from frozen, adding 1–2 minutes. Baked cookies also freeze well up to 3 months.
Nutrition is an estimate per cookie.
