Cream together the butter and cream cheese. Gradually add flour. It should form a moist dough. Portion into approximately teaspoon balls into mini muffin tin. Flatten to fit tin. (I really, really recommend the Pampered Chef mini tin and especially the wooden mini tart shaper. It makes this process super fast.)
In a medium sauce pan combine apples, sugar, and cinnamon. Cook for 5-7 minutes until the apple begin to soften. Add flour and mixture will thicken slightly.
Add filling with a spoon to each tart shell and avoid apples overflowing sides of pan. (they will stick to the pan and make it harder to release the tarts.
Bake at 400 degrees for 20-22 minutes. Let rest for a couple minutes and release with a teaspoon. You can either drizzle them with a caramel sauce, dust with powdered sugar or you could even top with a crumb topping prior to baking.