Prep your blender: Add the milk first.
This helps the blades catch everything and blend smoothly.
Layer in the base: Add the protein powder, frozen banana chunks, and Greek yogurt or cottage cheese.
Flavor it up: Add vanilla extract and a small pinch of salt. The salt sharpens the chocolate-cookie flavor.
Blend until smooth: Start on low, then move to high for 30–45 seconds. If it’s too thick, add a splash more milk.
If it’s too thin, add a few ice cubes or another banana chunk.
Add the cookies: Toss in the crushed sandwich cookies and pulse 2–3 times. You want speckles and small bits, not total dust.
Taste and adjust: If you want it sweeter, add a touch of honey or your preferred sweetener and blend briefly.
Serve: Pour into a tall glass. Top with extra cookie crumbs or cacao nibs if you like some crunch.