Beat softened cream cheese with sugar at medium speed until well blended
Add eggs, one at a time. Mix well after each addition
Add pumpkin, sour cream, spices, and vanilla. Mix just until well blended.
Divide mixture evenly over gingersnap crust in muffin cups.
Bake 20 to 25 minutes or just until set. While baking, mix sour cream and 1/4 cup sugar together in small bowl.
Remove cheesecakes from the oven and allow middles to drop for 5 minutes
Top each cheesecake with 1 tbsp of sour cream mixture. Return them to the oven and bake for 5 minutes
Remove cheesecakes from the oven and cool 30 minutes on wire rack. Refrigerate at least 2 hours before serving. Store leftovers in refrigerator for 2 to 3 days.