Heat all-purpose flour in the microwave for 30 second intervals stirring between each until it reaches 160°F. Set aside to cool.
Use a stand mixer fitted with the paddle attachment to cream softened butter, granulated sugar and brown sugar until light and fluffy.
Add milk and vanilla until just combined. Scrape the sides of the bowl.
Add the heat treated all-purpose flour and salt then mix on low speed until almost combined. Then add the white chocolate chips and rainbow sprinkles and mix on low speed until just combined.
Notes
Weigh your ingredients using a kitchen scale! Measuring ingredients by volume is not accurate.
Butter: I recommend using unsalted butter. You can use salted butter, just be sure to omit the 1/2 tsp salt.
Store edible cookie dough in an airtight container for up to a week in the fridge.
Nutrition: the provided nutritional information is an estimate for the entire cookie dough. Please read my Nutrition Disclaimer for more information.