Start by making the brownie layer. place the almonds, walnuts and chia seeds into a food processor and blend until they form a flour like consistency, similar to breadcrumbs. next, add the chestnuts and blend again for 30 seconds. then add the dates, cacao powder, coconut oil, himalayan pink salt and coconut sugar, if using. blend for 30 seconds to 1 minute, until the mixture comes together to in a slightly sticky dough-like consistency. make sure the mixture is smooth and that there are no large chunks of nuts involved, as this recipe tastes so much better when the mixture is completely smooth.
Once blended, either place into a cupcake or mini loaf tin tray (i use this one) or into a standard loaf tin or baking tray (around 9 x 5 in). Using trays with individual mini sections will be easier to handle, but you can use a larger tray and simply cut into individual pieces once set. Whichever you use, spread the mixture on the bottom of the tray/tray sections, making it about 1 to 1.5 cm in height. Place in the freezer to set.
Whilst the brownie layer sets, make the chestnut caramel layer. In a cleaned food processor or your blender, pulse the chestnuts for 20 seconds until they begin to break down into small pieces. Add the dates, almond butter or tahini, coconut oil, vanilla, syrup of choice and maca, if using and then continue to blend until smooth - about 1-2 minutes should do it.
Once the bottom layer is beginning to set and firm to touch, spread the chestnut caramel layer on top until the entire base is covered. Smooth evenly to ensure a more level finish to coat with the raw chocolate.
Return to the freezer and set for about 1-2 hours, or overnight. Unfortunately this step is necessary in order to easily coat the brownies in the chocolate layer. If you can't wait, follow the following step for drizzling the melted chocolate over the bars instead of dipping the bars into it.
Once set, start making the chocolate. Leave the brownies in the freezer until you have made the chocolate. bring a small pan of water to the boil and then set a heatproof bowl over the top. Add the cacao powder, cacao butter or coconut oil (or combination of both), salt and sweetener of choice to the bowl and whisk as the mixture melts together. Once combined, remove from the heat but leave the bowl over the water to avoid the chocolate cooling and thickening too quickly.
Remove the brownies from the freezer and remove from the tins carefully with a knife or cake slice. If you used a large dish, slice into desired sizes. Set each individual brownie onto a cooling rack with a layer of baking paper on the surface underneath the rack. One by one, add a brownie to the chocolate mixture and, working quickly, use a fork to turn the brownies through the mixture until fully coated. *You could alternatively keep the brownies on the rack and pour or spread the chocolate mixture over them, but I find this method a little messier. Sprinkle each one with chopped pecans or hazelnuts, Qnola or himalayan pink salt before the chocolate has fully set. You can also experiment with drizzling a second layer of chocolate over the smooth chocolate layer, and if you have leftover chocolate you could double dip, for a thicker, crunchier outer coating.
If the cooling rack fits, place it in your fridge or freezer once each brownie has been coated. If it doesn't fit, wait for the chocolate to set slightly at room temperature, and then transfer the brownies onto smaller plates or to tuppaware.
+ store in the freezer, and remove 5 minutes before serving.