One of the best ways to crush Oreos is to put them in a resealable plastic bag and break them down using a rolling pin or a heavy object such as a meat mallet or a frying pan. Another option is to use a food processor or blender. You can also place the Oreos in a bowl and use the back of a spoon to crush them into small pieces. Whatever method you choose, it's best to stop before turning them into a fine powder, as you want some texture and crunch in the Oreo Dip.