Prep the oats (optional but helpful): If you have 5 minutes, soak the oats in the milk while you gather ingredients. This softens them and makes the smoothie extra creamy.
Add base ingredients to the blender: Banana, oats, milk, and Greek yogurt or nut butter go in first.
Starting with liquids and soft ingredients helps everything blend smoothly.
Flavor it up: Add vanilla, cinnamon, a small pinch of salt, and sweetener if using. If your banana is very ripe, you may not need added sweetener.
Boost if desired: Toss in chia or flax for extra fiber and healthy fats. Add protein powder if you want more staying power.
Blend until smooth: Start low, then increase 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 and blend again.
Taste and adjust: Check sweetness, spice, and thickness. A tiny extra pinch of salt can balance the flavors nicely.
Serve right away: Pour into a glass or to-go cup.
Sprinkle a little cinnamon on top if you like.