In a small bowl combine sugar and flour. Set aside.
In large bowl of a stand mixer beat cream cheese until smooth, 2 or 3 minutes.
Add sugar/flour mixture to cream cheese and continue beating until combined.
With motor running add eggs one at a time.
Add vanilla, sour cream and heavy cream beating until combined.
Pour filling over crumb crust filling almost to the top of each paper liner. They will bake with a rounded top then as they cool the filling will settle creating a small indent for the caramel topping.
Bake in preheated oven for 12-14 minutes.
Cool completely on baking racks. Refrigerate over night in an airtight container. Cupcakes can be kept in the fridge for several days or frozen if needed.