Preheat oven to 350 degrees F. Line 2 muffin tins with about 16 paper liners and set aside. Meanwhile, in a large bowl, beat together the cake mix, water, oil, eggs, ginger, cinnamon and allspice with an electric mixer until blended, about 2 minutes.

Evenly distribute the batter among the muffin cups, filling about 3/4ths full. You should have roughly around 16 cupcakes.

Bake for approx. 15-18 minutes or until a toothpick inserted near the center of a cupcake comes back clean or with moist crumbs. Cool the cupcakes completely.

To make the frosting: in the bowl of a stand mixer, beat together the butter, marshmallow creme, and vanilla bean paste until blended, about 1 minute. Gradually add in the powdered sugar, about a cup at a time, then stream in the milk or cream to help thin the frosting out, adding more milk or cream as needed. Frosting should be light and fluffy.

Fill a piping bag attached with a large open star tip with the frosting. Pipe high onto cooled cupcakes and garnish with gingerbread men sprinkles and a gingerbread cookie if desired. Serve immediately or store cookies airtight at room temperature or in the fridge. Note that the cookies on top will get softer with time, especially in the fridge, so if you're planning on storing them for a later time I would garnish with the cookies right before serving.