Pulse the first set of almonds into a coarse flour in the food processor. Add all the other ingredients into the food processor and mix well. Add in the rest of the almonds at the end and pulse until chopped.
Spread the mixture into a brownie tin and then make the frosting. Spread the frosting over the mixture and leave it to set in the fridge for about 2-3 hours. Add the garnish and then cut into brownie squares