I make this every morning as I live in a banana producing country and they are so cheap to buy. This smoothie isn't the most exciting in the world and is fairly basic really but it's delicious and very nutritious. A great way to start the day, this will keep you full for a good few hours. It's also a good way to not waste bananas when they're starting to ripen too much but you don't want to eat them, for whatever reason, just throw them in the freezer! Peel them and put them in a plastic bag and freeze, so easy!
You need:
one banana, frozen
about 1/2 a pint of milk
a pinch of cinnamon
a tablespoon of ground flax seeds
sugar to taste
You basically just put all these ingredients in to a blender and blend until smooth. As long as you don't use too much milk, they mixture turns in to a thick, almost ice-cream like texture. If you prefer it not so thick, just add more milk - the measurements are really just approximate.