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