Butter, flour, and sugar are the main ingredients in these Blue Christmas Butter Cookies. Your Christmas will be anything but blue though after you bite into these cookies! They are the type of cookie that just melts in your mouth, and before you know it, you've eaten way more than your share!
Using a hand-held mixer, beat the butter until light and fluffy.
Add the condensed milk and beat into the butter until well combined.
Add the flour and baking powder. Mix into the butter mixture until well incorporated.
Cover bowl with plastic wrap and refrigerate for 30 minutes.
In the meantime, preheat oven to 325 degrees. Prepare a baking sheet by lining it with parchment paper. Set aside. Lastly, pour the sprinkles into a shallow bowl for rolling the cookie dough into. (If you are using more than one type of sprinkle, use a separate bowl for each type.)
Remove the cookie dough from the fridge and using a small cookie scoop, portion out 1 tablespoon of the cookie dough. Roll it into a smooth ball and then roll it into the sprinkles.
Place the cookie balls on the baking sheet, leaving 2 inches of space between each one.
Bake for 12 minutes. Remove from oven and allow to cool for 2-3 minutes before transferring to a wire cooling rack to finish cooling.