Melt the White Chocolate in the microwave at 15 second intervals, and stir until smooth.
Place the Sugar Cookies in a food processor, and pulse them until they're fine crumbs, and add to the melted chocolate.
Add the Sweetened Condensed Milk, and stir until completely blended.
Spray an 8 X 8 pan with Cooking Spray, and then line the bottom of the pan with Parchment paper.
Pour the Fudge into the pan, and spread to smooth, with a Spatula.
Sprinkle the M & M's on top, White Chocolate chips, and sprinkle the Christmas Sprinkle Mix on top of the Fudge.
Place the Fudge in the refrigerator overnight.
When ready to serve, cut in 1 inch pieces, serve, and Enjoy!