Preheat the oven to 180°C and line a tray with baking paper.
Add the banana, peanut butter, water and vanilla to a large bowl and beat with an electric whisk (or whiz with a hand-held blender) until mostly smooth.
Add in the almond meal, baking powder, cinnamon and salt and beat until well combined.
Using a spoon, gently fold in the cacao nibs (or chopped chocolate), shredded coconut and nuts.
Dollop the sticky dough into 12 equal mounds on the prepared trays. Place in the oven and bake for 15–18 minutes, or until the bottoms are firm and the edges are golden.
Remove the cookies from the oven and leave them to cool slightly on the tray. Drizzle over the smooth peanut butter (optional) and enjoy.