It is actually really easy, and the only things you need are a cookie, baker's white chocolate, and red sugar sprinkles.
Step One: Melt the white chocolate according to package directions (the microwave is easiest)
Step Two: Dip half of a cookie into the white chocolate
Step Three: Dip the top of the cookie into red sugar sprinkles
Ta-dah! Now you have Santa hat Christmas cookies!
The possibilities are really endless as to what kinds of cookies you can dip. I think almost anything goes well with chocolate. Fruit cookies (these are raspberry in my picture), chocolate, butterscotch, or mint chip cookies, nut cookies, funfetti cookies. Seriously. What doesn't go well with chocolate?
What kind of cookie are you going to dip??