01 - Preheat the oven to 350°F. Spread the flour in an even layer on a rimmed baking sheet and bake for 5 minutes to eliminate any harmful bacteria. Remove from the oven and allow the flour to cool completely before proceeding.
02 - In a large mixing bowl, beat the softened butter, granulated sugar, and packed light brown sugar together using a hand mixer or stand mixer on medium speed until the mixture is light and fluffy, approximately 2 minutes.
03 - Add the unsweetened cocoa powder, salt, milk, and vanilla extract to the creamed mixture. Continue mixing on medium speed until all components are fully blended and the batter is smooth.
04 - Gradually add the cooled, heat-treated flour to the bowl, mixing on low speed until the dough just comes together. Avoid overmixing to keep the texture tender.
05 - Add the red gel food coloring and mix thoroughly until the dough is uniformly tinted with an even, vibrant red hue throughout. Use gel coloring rather than liquid to prevent a bitter aftertaste.
06 - Using a silicone spatula, gently fold the mini white chocolate chips into the dough until evenly distributed, being careful not to crush the chips.
07 - Scoop the cookie dough into individual serving bowls or roll into bite-sized balls by hand. Serve immediately at room temperature for the best texture.
08 - Transfer any remaining cookie dough to an airtight container and refrigerate for up to 5 days. Allow refrigerated dough to sit at room temperature for 10 minutes before serving to soften.