01 -
Peel and slice 3 medium overripe bananas. Place the slices into a large mixing bowl or heat-resistant liquid measuring jug.
02 -
If texture is desired, finely cube 1 to 2 additional bananas and reserve for later.
03 -
Add 2/3 cup milk, 1–2 tablespoons sugar, 1/4–1/3 cup sweetened condensed milk, and vanilla extract (if using) to the sliced bananas. Blend the mixture with an immersion blender until smooth and homogenous.
04 -
Transfer the blended banana milk base to a large beverage container. Pour in 3 cups milk and mix thoroughly with a spoon.
05 -
If using, stir in the reserved cubed bananas to introduce texture.
06 -
Refrigerate for several hours to allow the flavors to meld and achieve optimal chill. Alternatively, serve immediately over ice.