01 - Preheat oven to 350°F. Line 2 baking sheets with parchment paper.
02 - Whisk together flour, baking soda, and salt in a medium bowl. Set aside.
03 - Beat softened butter with sugar until light and fluffy. Mix in egg yolks, vanilla extract, and sour cream until fully combined.
04 - Gradually incorporate dry ingredients, mixing until a soft dough forms. Avoid overmixing.
05 - Combine cream cheese, sugar, and vanilla bean paste in a small bowl. Beat until smooth and creamy.
06 - Scoop 2 tablespoons of dough and flatten into a disc. Place 1 teaspoon filling in center. Fold dough around filling and pinch to seal. Place seam side down on prepared sheet.
07 - Repeat with remaining dough and filling, spacing cookies 2 inches apart. Bake for 11-13 minutes until edges are set but centers are soft. Cool on pan for 10 minutes, then transfer to wire rack.
08 - Sprinkle thin layer of granulated sugar on each cooled cookie. Use kitchen torch to brûlée sugar until golden and crisp. Cool 5 minutes before serving.