In a mixing bowl beat butter on medium-high speed for 30 seconds.
Add about half of the flour, 1 cup sugar, the egg, vanilla, baking soda and cream of tartar. Beat till thoroughly combined. Beat in remaining flour. Cover and chill for one hour.
Roll dough into balls about 1 inch in diameter. Combine 2 Tbsp sugar and 1 tsp cinnamon in small bowl. Drop dough balls into sugar and roll around until completely covered. Place on an ungreased baking sheet at least 2 inches apart.
Bake at 375° for 10-11 minutes until edges are golden.
Cool cookies on a wire rack.
Nutrition
Calories: 51kcal
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