Prep your banana: Slice and freeze ripe bananas ahead of time. This gives the smoothie a thick, milkshake-like texture.
Add liquids first: Pour the milk into your blender. Starting with liquid helps the blades catch everything smoothly.
Layer the rest: Add frozen banana, hazelnut butter, cocoa powder, vanilla, a pinch of salt, and any optional add-ins like protein powder or seeds.
Blend until silky: Start low, then increase to high for 30–60 seconds.
If it’s too thick, add a splash more milk. If it’s too thin, toss in a few ice cubes or another chunk of frozen banana.
Taste and adjust: If you want more sweetness, add a small drizzle of maple syrup or honey and blend again. For deeper chocolate flavor, add another teaspoon of cocoa.
Serve right away: Pour into a chilled glass.
For a café-style touch, dust the top with cocoa powder or shave a bit of dark chocolate over it.