Mix the base: In a bowl or jar, whisk 1 cup milk, 1/2 cup Greek yogurt, 1 scoop (about 25–30 g) protein powder, 1/2 teaspoon vanilla extract, and a small pinch of salt. If your protein powder is unsweetened, add 1–2 teaspoons sweetener to taste.
Add chia seeds: Stir in 3 tablespoons chia seeds.
Whisk well so seeds don’t clump. Let it sit for 2–3 minutes, then whisk again to keep the texture even.
Crush the cookies: Place 2–3 Oreos in a bag and crush lightly with your hand or the bottom of a glass. Aim for a mix of fine crumbs and small pieces so you get crunch and flavor throughout.
Fold in the Oreos: Stir about two-thirds of the crushed cookies into the chia mixture.
Save the rest for topping later.
Chill to thicken: Cover and refrigerate for at least 2 hours, ideally overnight. Chia seeds need time to gel and create that pudding texture.
Stir and adjust: After chilling, give it a good stir. If it’s too thick, add a splash of milk.
If it’s too thin, stir in 1 extra teaspoon chia and let it rest another 10–15 minutes.
Top and serve: Spoon into bowls or jars. Sprinkle the remaining cookie crumbs on top. For a little extra creaminess, add a dollop of yogurt or a drizzle of milk.