firstly, in a blender take oreo biscuits.
furthermore, add ¾ to 1 cup of thick cold milk. add more milk if you are looking for thin milk shake.
also add 2-3 scoops of vanilla ice cream. ice cream helps to make milkshake thick and creamy.
further, blend to smooth milkshake.
pour the milkshake into serving glass.
also top with generous amount of whipped cream.
finally, serve oreo milk shake garnished with few crushed oreo biscuits.