01 - In a large mixing bowl, beat the softened butter and cream cheese together with an electric mixer on medium speed until smooth and creamy, approximately 2 minutes.
02 - Add the granulated sugar and continue beating until the mixture is light and fluffy, scraping down the sides of the bowl as needed.
03 - Mix in the egg and vanilla extract, beating until fully combined and the mixture is uniform.
04 - In a separate bowl, whisk together the all-purpose flour, baking powder, and salt. Gradually fold the dry mixture into the wet ingredients, mixing until just combined. Do not overmix.
05 - Cover the dough tightly and refrigerate for at least 30 minutes to firm up for easier scooping and shaping.
06 - Preheat the oven to 350°F. Line two baking sheets with parchment paper and set aside.
07 - Scoop heaping tablespoons of chilled dough onto the prepared baking sheets, spacing each mound about 2 inches apart to allow for spreading.
08 - Using the back of a spoon, gently press a shallow indent into the center of each dough mound.
09 - Dollop approximately 1/2 teaspoon of caramel sauce into each indentation. Lightly swirl the caramel into the dough using a knife or toothpick for a marbled effect.
10 - Bake for 11 to 13 minutes, or until the edges are lightly golden and the centers appear just set.
11 - Allow the cookies to rest on the baking sheet for 5 minutes, then transfer to a wire cooling rack to cool completely before serving.