In a medium sized heat safe bowl, combine the white chocolate chips and the sweetened condensed milk. Place in the microwave, and heat for 25 seconds at a time, stirring well after each 25 seconds. The chips and condensed milk mixture will be stiff half way through the heating, but will become smoother.
After the mixture is a smoother texture, add the molasses and stir until the color of the mixture is a light brown.
Add the spices and mix well.
Lightly spray a 8x8 square baking dish.
Pour fudge into the baking dish.
Evenly spread the fudge using slightly wet, clean hands.
Spread the seasonal non-pareils over the slightly damp fudge. Lightly pat down to set the non-pareils.
Refrigerate for 2 hours to overnight.