01 - Preheat oven to 350°F. Line the bottom of a 9-inch springform pan with parchment paper.
02 - Combine gingersnap crumbs, melted butter, brown sugar, cinnamon, and salt in a bowl. Press the mixture evenly into the bottom of the pan. Bake for 8 minutes and allow to cool slightly.
03 - Reduce oven temperature to 325°F.
04 - Beat cream cheese in a large bowl until smooth and creamy. Add brown sugar and molasses and mix well.
05 - Add eggs one at a time, beating after each addition and scraping down the sides as needed.
06 - Mix in sour cream, ground ginger, cinnamon, nutmeg, cloves, salt, and vanilla extract until just combined without overmixing.
07 - Pour filling onto the cooled crust and gently tap the pan to release air bubbles. Place the springform pan on a baking sheet and bake for 60 to 70 minutes, until the edges are set and the center is slightly wobbly.
08 - Turn off the oven, crack the door, and let the cheesecake cool inside for 1 hour. Then remove and chill for at least 4 hours or overnight.
09 - Whip cold heavy cream with powdered sugar until stiff peaks form. Spread or pipe over the chilled cheesecake and decorate with gingerbread cookies.
10 - Slice and serve the cheesecake chilled.