Soften the oats (optional but recommended): Add the oats to your blender with the milk and let sit for 5–10 minutes. This helps them blend smoother and taste less “oaty.” If you’re in a rush, you can skip the soak.

Add the berries and banana: Toss in the blueberries and banana. Frozen fruit gives a thicker, colder smoothie.

Layer in the protein: Add the Greek yogurt. For a dairy-free version, use a thick plant-based yogurt.

Boost it up (optional): Add nut butter, seeds, and vanilla extract if using. These add healthy fats, fiber, and flavor.

Blend until creamy: Start on low, then increase to high for 30–45 seconds, until completely smooth. Add a splash more milk if it’s too thick.

Taste and adjust: If you want it sweeter, add a little honey or maple syrup and blend again for a couple of seconds.

Serve immediately: Pour into a cold glass. If you like texture, sprinkle a few oats, granola, or extra blueberries on top.