Spray two 12-cup muffin tins with non-stick cooking spray, then gently press one wrapper into each cup, letting the corners fold upward. Bake at 350° F for 8 minutes. Set aside to cool, but don't remove them from the muffin tin.
While the shells are baking, prepare the cheesecake filling by combining softened cream cheese, sour cream, granulated sugar, and vanilla extract in a medium mixing bowl. Use a hand mixer on medium speed to mix until smooth and creamy, about 1 minute.
In a separate mixing bowl, prepare the streusel topping by combining the flour, oats, brown sugar, and melted butter. Use a fork to mix until large crumbs form.
Once the shells have cooled slightly in the tins, assemble the wontons by evenly distributing the cheesecake mixture, then the apple pie filling, and finally the streusel topping among the shells.
Bake the assembled cups at 350° for another 8-10 minutes. Cool to desired temperature, then enjoy as is or topped with whipped cream.