1Preheat oven and brush bread cubes with melted butter. and place on a baking sheet.Bake until golden. While still hot sprinkle with cinnamon.Set aside.
Ina large saucepan bring milk to a full boil. Add the bananas, soda, 1 tsp cinnamon. salt, ginger and lemon juice.
Cook for another 10 mins or until bananas become soft.. Let cool.
Put in a blender and add ice cream....or use a hand blender .
Blend until smooth and frothy.
Add more milk or ice cream depending on the consistency desired..Pour into chilled bowls and sprinkle with croutons. Serve!!