Combine the flour, powdered sugar, cocoa powder, baking powder and salt, and sift all the dry ingredients together in a large mixing bowl. Using a hand whisk, give them a stir.
In a separate bowl place the egg, milk and red food gel coloring. Whisk all the wet ingredients together.
Next, pour the egg mixture into the dry ingredients and add softened butter. Using a spatula, combine the ingredients together. You can also use your hand to knead the cookie dough. Don’t forget to use a glove to protect your skin from the food coloring. The cookie dough will be thick and sticky. Cover the bowl with plastic wrap and refrigerate for 1-2 hours.
In the meantime, preheat the oven to 375°F degrees (190°C) and cover a baking pan with parchment paper or a Teflon sheet.
Using a cookie scoop or a spoon, scoop and roll the chilled dough into a ball. Generously, roll each ball in the powdered sugar. Place the cookie balls on the prepared baking sheet within 3 inches in between each ball.Bake the cookies at 375°F (190°C) for 12-15 minutes depending on the size of the cookies and your oven. Cool cookies for about 5 minutes on the baking sheet, then transfer to a wire rack to cool completely.