Prep your banana: If you haven’t already, slice and freeze a ripe banana. Frozen bananas are key for a thick, creamy smoothie.
Add liquids first: Pour the milk into your blender.
This helps the blades catch and blend smoothly.
Layer the rest: Add the frozen banana, almond butter, oats, cinnamon, vanilla, salt, and sweetener if using. Add any optional protein powder or seeds now.
Blend until creamy: Start on low, then increase to high. Blend 30–60 seconds until completely smooth.
If it’s too thick, add a splash more milk.
Taste and adjust: Add more cinnamon for warmth, a drizzle of maple for sweetness, or a pinch more salt to enhance the cookie flavor.
Serve immediately: Pour into a chilled glass. Sprinkle a little cinnamon on top for that classic snickerdoodle look.