Begin by preheating your oven to 180°C (350°F).
Evenly spread the all-purpose flour on a baking tray and place it in the preheated oven for 5 minutes to eliminate any potential bacteria present in the flour. Allow it to cool completely.
In a mixing bowl, blend the softened unsalted butter and granulated sugar until the mixture becomes smooth and creamy.
Add the vanilla extract and milk into the mixture, ensuring they are thoroughly combined.
Gradually introduce the previously baked and cooled flour into the mixture, stirring continuously to prevent the formation of lumps.
Gently fold in the crushed Oreo cookies and a pinch of salt, ensuring even distribution of all ingredients.
Your delectable Oreo cookie dough is now ready for enjoyment! You can savour it on its own or use it as a topping for ice cream, brownies, or other delectable desserts.