01 - Preheat oven to 350°F. Line 2 baking sheets with parchment paper and set aside.
02 - In a medium bowl, whisk together flour, baking soda, and salt. Set aside for later use.
03 - In a large bowl, beat softened butter with sugar using an electric mixer until light and fluffy. Add egg yolks, vanilla extract, and sour cream, mixing until fully combined.
04 - Gradually incorporate the dry ingredients into the wet mixture, mixing until a soft dough forms. Be careful not to overmix.
05 - In a small bowl, combine cream cheese, sugar, and vanilla bean paste. Beat until smooth and creamy.
06 - Scoop approximately 2 tablespoons of cookie dough and flatten into a disc. Place 1 teaspoon of cream cheese filling in the center, fold dough around the filling, and pinch to seal completely. Place seam side down on prepared baking sheet.
07 - Repeat assembly with remaining dough and filling, spacing cookies at least 2 inches apart. Bake for 11-13 minutes until edges are set but centers remain soft.
08 - Allow cookies to cool on the baking pan for 10 minutes, then transfer to a wire rack to cool completely.
09 - Sprinkle a thin, even layer of granulated sugar atop each cooled cookie. Using a kitchen torch, carefully caramelize the sugar until golden and crisp. Allow to cool for 5 minutes before serving.