Preheat oven to 350° (175°C)
Place the banana, vanilla and maple syrup in the food processor and process until smooth.
Add the black beans, cacao powder and salt and process until totally smooth, about a minute or two.
Pour mixture into a mixing bowl and place the almonds and coconut in the food processor (don’t worry about washing the food processor).
Process the almonds and coconut until the almonds are chopped up to your liking.
Add this to the mixing bowl, along with the chia seeds and stir until everything is incorporated.
Line an 8 x 11 (20.3cm x 28cm) pan with parchment paper so that it covers the bottom and sides of the pan (or opt for an equivalent silicone baking pan) and pour in the brownie mixture.
Bake for 35 minutes.