01 -
In a medium bowl, whisk together the all-purpose flour, unsweetened cocoa powder, baking powder, and kosher salt until evenly mixed.
02 -
Using an electric mixer, beat the softened salted butter with granulated sugar and light brown sugar on medium speed until light and fluffy, about 3 to 5 minutes, scraping the bowl as needed.
03 -
Incorporate the egg and vanilla extract into the butter mixture, mixing until fully combined. Then add the red gel food coloring and beat until the dough achieves a uniform vibrant red color.
04 -
Reduce mixer speed to low and gradually add the dry ingredient mixture to the wet mixture. Stir until just combined to avoid overmixing.
05 -
Cover the dough and refrigerate for 20 minutes to firm up, making it easier to handle.
06 -
Preheat the oven to 350°F and line two baking sheets with parchment paper.
07 -
Scoop tablespoon-sized portions of dough and roll each into a ball. Roll the balls in granulated sugar to coat thoroughly, then place on baking sheets spaced 2 inches apart.
08 -
Use your thumb to press gently into the center of each dough ball to form a well. Refrigerate the shaped cookies for another 20 minutes until firm.
09 -
Bake for 12 to 14 minutes, rotating baking sheets halfway through, until the bottoms turn light golden brown and the cookies are set.
10 -
Allow cookies to cool on the baking sheets for 5 minutes before transferring them to wire racks to cool completely.
11 -
Beat the softened cream cheese with powdered sugar using a mixer on medium speed until smooth and creamy.
12 -
Fill each thumbprint indentation with about one teaspoon of the cream cheese filling, using a piping bag or spoon.