How to make
Put the walnuts and peeled bananas in a blender and blend them until you have a smooth mixture.
Spoonful by spoonful from ball shapes from this mixture and flatten them with your hands.
Place the shaped walnut cookies in a baking tray with a non-stick coating and bake them at a moderately heated oven for about 15 minutes or until they're done.
The end result is - pleasantly crunchy cookies.