Using a large bowl, cream together the butter and cream cheese until combined and smooth

Beat in the egg and vanilla until combined

Cover with plastic wrap and place into the fridge overnight

Preheat the oven to 350 degrees and line two cookie sheets with parchment paper or a silicone mat

Using a small ice cream scooper, scoop out some of the dough and roll it into a ball

Scoop the powdered sugar into a large bowl

Sprinkle the cookie ball with some more sprinkles then roll the ball in the powdered sugar until completely coated

Place onto the cookie sheets

Bake in the oven for 8-10 minutes or until lightly brown

Allow cooling for a few minutes before placing onto a wire rack to cool completely

Using a heat-safe bowl, melt the white chocolate in 30-second increments in the microwave until completely melted

Carefully Dip half of the cookie into the white chocolate

Very gently shake any excess white chocolate off

Place the cookie onto the parchment paper or silicone mat

Sprinkle some more Christmas sprinkles

Allow the chocolate to completely harden before enjoying it!