Mix flaxseeds with 3 Tbsp of water and let sit for 10 minutes. Meanwhile prepare a baking tin or brownie pan by slightly greasing it or lining it with parchment paper.
In a blender or food processor blend chickpeas, almondbutter, almondmilk, sugar and syrup until a smooth consistency forms.
Add the remaining ingredients EXCEPT the marshmallows and blend again to combine everything well.
Spread out the batter evenly in the prepared form and sprinkle the marshmallows on top. Push them down gently and bake the brownies in the oven for 20-25 minutes.
Let cool COMPLETELY before slicing (important step, as the brownies could fall apart easily. Waiting might be hard, but patience is a real key here!). Enjoy!
Notes
*use maple syrup instead**you could substitute it with date- or brown sugar***you may substitute it with oat flour or a gluten-free flour mix