Line an 8x8 pan with aluminum foil and lightly grease or butter the foil. Set aside.
Combine white chocolate chips, condensed milk, molasses, and butter in a medium-sized saucepan over medium heat.
3 cups premium white chocolate chips, 1 14 oz can sweetened condensed milk, ¼ cup molasses, 1 Tablespoon butter
Stir frequently until butter and chocolate chips are completely melted and ingredients are completely combined.
Add vanilla extract and all spices, stir well.
1 teaspoon vanilla extract, 1 ½ teaspoon ground ginger, 1 teaspoon ground cinnamon, ¾ teaspoon nutmeg, ½ teaspoon allspice, ½ teaspoon ground cloves
Pour mixture into prepared 8x8 pan (make sure the pan is on a heatproof surface or oven mitt as the bottom of the pan will become quite hot).
Allow fudge to cool completely before cutting/decorating (this will take several hours at room temperature, or you can speed up the process and refrigerate 1-2 hours).
Once the fudge has set, cut and prepare white chocolate melting wafers according to package instructions.
1 cup white chocolate melting wafers
Pour melted chocolate into a small ziploc bag, snip off a small piece of the corner, and decorate as desired.
Let chocolate harden (only a few minutes) before enjoying.
Uneaten fudge can be stored at room temperature in an airtight container.