Soften the oats: Add the milk and oats to the blender first. Let them sit for 2–3 minutes to hydrate slightly.
This helps the oats blend ultra-smooth and reduces any gritty texture.
Layer for easy blending: Add the frozen banana, protein powder, nut butter, cinnamon, vanilla, sweetener (if using), and a pinch of salt. Place ice cubes on top.
Blend until silky: Start on low, then increase to high for 30–45 seconds, or until completely smooth. Scrape down the sides if needed and blend again.
Taste and tweak: If you want it sweeter, add a touch more maple or a date.
For a thinner shake, add a splash of milk. For thicker, add more ice or a few extra oats.
Serve immediately: Pour into a tall glass. Optional: top with a sprinkle of cinnamon or a few oat flakes for that oatmeal-cookie vibe.