In a blender, put all the oreo cookies, little by litle, until they are all well crushed

Set aside

In a soup dish, spread butter or margarine, put marshmalloes in, and place them in the microwave until melted.

Do this until they are all melted, and start mixing it with the oreo cookies in a bowl.

Mix until well blended.

TIP: in the bowl were marshmallow and cookie mix will be, also spread butter so that mixture doesnt stick