Prepare Sugar Cookie dough as directed. Refrigerate dough at least 30 minutes.
Mix cream cheese, sugar and egg together with an electric mixer until smooth.
Preheat oven to 375 degrees F.
Liberally, spray mini muffin tins with non-stick vegetable spray.
Place 1 T cookie dough in each muffin tin. Using your fingers or a tart press (tamper) press the dough into the bottom and up sides of tin. Try to get as even as possible.
Fill center of cookie with cream cheese mixture. It will take approximately half a tablespoon to fill.
Bake at 375 degrees F for 15 minutes or until cookie is light brown and cheesecake center is set. The center will change from shiny to more matte when it's cooked.
Remove from oven and allow to cool about 5 minutes before carefully removing them from the pan.