Cinnamon Chip Snickerdoodle Bars | epicuricloud (Tina Verrelli)

Ingredients

• 2 3/4 cups flour (364g)
• 2 teaspoons cream of tartar (6g)
• 1 teaspoon baking soda (5g)
• 1/2 teaspoon salt (4g) (I use coarse kosher)
• 2 sticks (1 cup) unsalted butter (softened)
• 1 1/2 cups sugar
• 2 large eggs
• 1 teaspoon vanilla
• 1/2 cup cinnamon chips (see note)
• 2 tablespoons cinnamon sugar ((2 tablespoons sugar + 1 1/2 teaspoons cinnamon))
• 1 cup powdered sugar
• 1/4 teaspoon vanilla extract
• 1-2 tablespoons milk