Thin Mint Mint Cookies

Bahan-bahan (16 porsi)

• 1 cup butter (softened (2 sticks))
• 1 & 1/2 cups sugar
• 2 large eggs plus 1 egg yolk
• 1/2 teaspoon peppermint extract (or more to taste)
• 10 -15 drops green food coloring
• 3 & 1/4 cups all-purpose flour (spooned and leveled)
• 2 teaspoons baking powder
• 1 teaspoon baking soda
• 1 teaspoon cream of tartar
• 1/2 teaspoon kosher salt
• 1 box Thin Mints (or grasshopper cookies)
• chocolate chips (to top with (optional))