Heat-treat the flour either in the oven or the microwave & then let it cool.Oven: Preheat to 350°F. Measure flour into a small/medium pan & bake for 7-10 minutes or until it reaches a temperature of 160-165°F.Microwave: Measure flour into a microwave-safe bowl & heat for 30 seconds. Stir and check the temperature with a thermometer. Continue heating in 15 second intervals until it reaches 160-165°F.
Crush the cookie sandwiches and set them aside.
In a large bowl, mix together the butter, sugar, vanilla extract and milk really well.
Sift the heat-treated flour into the wet ingredients and mix it in along with the salt. Then, stir in the chopped cookie sandwiches.
Notes
Storage: Store leftover cookie dough in an airtight container in the refrigerator for up to 1 week or freezer for up to 1 month.Nutrition Information: The provided nutrition information is an estimate, the calorie accuracy is not guaranteed.