Ingredients
2½cupsall-purpose flour
1tspbaking soda
2tspcream of tartar
½tspcinnamon
¼tspsalt
2unsalted butter sticks
1¼cupsdark brown sugar,packed
½cupgranulated sugar
1large egg
1egg yolk
1tspvanilla extract
1tbspGreek yogurt,plain
¼cupsugar
2tspcinnamon
Preparation
Whisk together the flour, baking soda, cream of tartar, ½ teaspoon of cinnamon, and salt in a bowl and set aside.
Melt the butter in a saucepan over medium heat. Make sure to whisk consistently while the butter foams.
After a couple of minutes, the butter will begin to brown on the bottom of the saucepan. Continue to whisk, then remove from heat as soon as the butter begins to brown and give off a nutty aroma.
Immediately transfer the butter to a bowl to prevent burning. Set aside to cool for a few minutes.
With an electric mixer, mix the butter and sugars until thoroughly blended. Beat in the egg, yolk, vanilla, and yogurt until combined.
Add the dry ingredients slowly, and beat on low speed just until combined.
Chill the dough for 3 hours, or as long as possible in the refrigerator.
Preheat the oven to 350 degrees F.
Once the dough is chilled, measure about 2 tablespoons of the dough and roll into a ball.
Mx the cinnamon and sugar in a bowl. Roll the balls in the cinnamon-sugar mixture, then place the dough balls on the cookie sheet, 2 inches apart.
Bake the cookies for 8 to 11 minutes, or until the edges of the cookies begin to turn golden brown.
Cool the cookies on the sheets for at least 2 minutes. Remove the cooled cookies from the baking sheets after a few minutes and transfer to a wire rack to cool completely.
Repeat with remaining dough.
Serve and enjoy!