Ingredients
  • 1/2 cup salted butter, softened
  • 1/2 cup vegetable shortening
  • 1 1/2 cups plus 2 tablespoons sugar
  • 2 medium eggs
  • 2 3/4 cups all-purpose flour
  • 2 teaspoons cream of tartar
  • 1 teaspoon baking soda
  • 1/4 teaspoon fine salt
  • 2 teaspoons ground cinnamon
Preparation
Preheat the oven to 400°F. 
 
In a large bowl, combine the butter, shortening, 1 1/2 cups sugar and the eggs, and mix thoroughly with an electric mixer on medium speed until creamy and well combined, 1 to 2 minutes. Sift together the flour, cream of tartar, baking soda and salt, and stir into the shortening mixture. 
 
In a small bowl, stir together the remaining 2 tablespoons sugar and cinnamon. 
 
Shape the dough into 1 1/2-inch balls (1 tablespoon per ball), and roll each ball in the cinnamon-sugar. Arrange the dough balls 2 inches apart on ungreased cookie sheets. Bake two sheets at a time until the edges of the cookies are set but the centers are still soft, 8 to 10 minutes, rotating the sheets halfway through. Transfer the cookies to wire racks for cooling. Repeat with the remaining dough balls. Store in an airtight container.