01 - 
                Stir flour and baking powder together in a bowl and put aside.
              
              
              
                02 - 
                Beat the butter, sugar, and vanilla extract in a big bowl until smooth.
              
              
              
                03 - 
                Drop in eggs one by one, stirring after each one goes in.
              
              
              
                04 - 
                Pour in the flour mix and stir until everything's combined.
              
              
              
                05 - 
                Work the dough with your hands until it's firm and not tacky. Wrap it up and stick it in the fridge for an hour.
              
              
              
                06 - 
                Turn on the oven to 375°F (190°C). Put parchment on your baking trays and set them aside.
              
              
              
                07 - 
                Roll small 1-inch balls or make 6-inch strips and curl them into swirls, tucking the end underneath. Place them on your tray with 2 inches between each.
              
              
              
                08 - 
                Let them bake for 8-10 minutes. They should get light brown on the bottom but stay pale on top.
              
              
              
                09 - 
                Move the cookies to a wire rack and wait until they're totally cool before adding glaze.
              
              
              
                10 - 
                Stir together powdered sugar, milk, and vanilla until it's runny but still thick. Add more milk or sugar to get it just right.
              
              
              
                11 - 
                Dunk the tops of your cooled cookies into the glaze and let extra drip off. Put them on a rack and scatter sprinkles on top. Wait 30-60 minutes for the glaze to set.