In a mixing bowl, sift the flour. Add in the baking powder, baking soda, salt, and sprinkles.
1 ½ cups All-purpose flour, ½ teaspoon Baking powder, ½ teaspoon Baking soda, ½ teaspoon Salt, ½ cup Christmas sprinkles
Using a mixer, beat the butter, sugar, and brown sugar. Beat on high for 2 minutes. Add in vanilla and egg. Beat on high for 1 minute.
½ cup Unsalted butter, ¾ cup White granulated sugar, 2 tablespoon Brown sugar, 1 teaspoon Pure vanilla extract, 1 Large egg
Add in the dry ingredients. Mix on low until just combined.
Chill the dough for 30 minutes.
Preheat oven to 350°F. Line 2 cookie sheets with parchment paper. Scoop 1 tablespoon of cookie dough. Roll until smooth. Bake 6 cookies per cookie sheet. Bake for 13-15 minutes. They need to be spread out to rise. Don't bake 12 on the cookie sheet.
Let the cookies sit for 5 minutes before transferring to a cooling rack. Cool completely.