Preheat oven to 350 F / 175 C and line two large baking sheets with parchment paper or a silicone mat. Set aside.
Whisk together 1 cup flour, 2 Tbsp cocoa powder, 3/4 tsp baking powder, and 1/4 tsp salt in a large bowl. Set aside.
Use a handheld or stand mixer with a paddle attachment to cream together 1/4 cup butter, 1/3 cup packed brown sugar, and 1/4 cup granulated sugar in a large bowl. Mix on a medium-high speed until the mixture becomes lighter in color.
Then mix in 1 large egg, 1 tsp vanilla extract, and 1/2 tsp red gel food coloring on a medium speed. Scrape down the sides and bottom of the bowl as needed with a rubber spatula.
Add the dry ingredients to the wet ingredients and mix on a low speed just until incorporated. The dough should be thick and a little bit sticky! If desired, fold 2/3 cup of mini white chocolate chips into the dough with a rubber spatula.
Scoop the dough using a 1 Tbsp cookie scoop and roll it into 16 balls.
Combine 1/3 cup powdered sugar and 1/3 cup granulated sugar in a small bowl and toss each cookie in the sugar mixture. Be sure to completely coat each cookie and aim to get a thick coating of sugar.
Place the cookies on the prepared sheet, spacing them about 2 inches apart. Then lightly flatten each ball to resemble a hockey puck. Bake one sheet of cookies at a time, and bake for 9-10 minutes. Let the cookies cool for 15 minutes on the baking tray before transferring them to a wire cooling rack. Bake time can vary if you make smaller or larger cookies, so keep an eye on them!
Store any leftover cookies in an airtight container at room temperature for up to 5 days.