Gather all ingredients.
If using fresh blueberries, rinse them under cool water.
Peel the banana and break it into chunks.
In a blender, add the blueberries and banana.
Pour in the yogurt and milk.
Add honey if you prefer extra sweetness.
If desired, add a few ice cubes for a colder smoothie.
Blend on high speed until smooth and creamy.
Taste and adjust sweetness if necessary, then blend again.
Pour into glasses and enjoy immediately.