butter, granulated sugar, and brown sugar until light and fluffy.
Add eggs and vanilla, mixing well.
In a separate bowl, whisk together flour, baking soda, cream of tartar, and salt. Gradually add to wet ingredients until fully combined.
Scoop dough into 1-inch balls, roll in cinnamon sugar mixture, and place on baking sheet. Flatten slightly.
Bake for 8–10 minutes until edges are lightly golden. Let cool completely.
In a bowl, beat cream cheese, powdered sugar, and vanilla until smooth.
Pipe or spoon cheesecake filling onto the flat side of one
