1. Prepare the Crust:

1. Preheat oven to 350°F (175°C) and line a baking sheet with parchment paper.
2. In a bowl, cream together butter and granulated sugar until light and fluffy. Mix in egg yolk and vanilla extract.
3. Gradually add flour and mix until a soft dough forms. Chill dough for 15 minutes.
4. In another bowl, beat cream cheese, caramel sauce, and powdered sugar until smooth.
5. Roll dough into small balls, flatten slightly, and place a teaspoon of the cream cheese mixture in the center. Fold edges over to seal.
6. Bake for 12-15 minutes or until edges are lightly golden. Let cool before serving.