Spread the all-purpose flour on a baking sheet and bake for 8 minutes, stirring once halfway through.
Allow heat-treated flour to cool completely before proceeding with the rest of the recipe.
In a medium-sized bowl, beat together the butter, white and brown sugars until light and fluffy, about 2 minutes.
Beat in the milk and vanilla extract until well-combined.
Whisk together the flour and salt, and then add to the batter and beat until completely incorporated and no dry streaks remain.
Crumble the OREO cookies into the dough and beat to distribute evenly.
Refrigerate until ready to serve.
Notes
Chill for an hour before serving. If you can manage it, chilling the cookie dough for an hour makes it easier to scoop and also gives it that extra delicious flavor!
Pay attention to the texture. The dough should be slightly moist, but not too wet.
Once you add the flour and dry ingredients to the wet ingredients, be careful to not overmix the batter.
Make sure to use room temperature butter so that it mixes well. I like to line my container with parchment paper so that the dough balls do not stick together while they are chilling in the fridge.