01 - Add milk, protein powder, chocolate sandwich cookies, vanilla extract, frozen banana if using, ice cubes, and honey or maple syrup if using to a blender.
02 - Blend on high speed until the mixture is completely smooth and creamy, approximately 30 to 60 seconds.
03 - Pour the shake into a large glass. Garnish with crushed cookie crumbs or a dollop of whipped cream if desired, and serve immediately.