Preheat the oven to 300F and line an 8x4 bread loaf pan with parchment paper.
For the brownie crust
In a medium-size mixing bowl, combine ground almonds. cocoa powder, powdered erythritol, salt, coconut flour, and baking powder. Add eggs in, one at a time, as well as olive oil (or melted butter).
Use an electric mixer to combine. Slowly add almond milk in, just enough to make the batter pourable, Mix well.
Fold in chopped almonds and transfer the crust batter into a prepared baking dish. Bake in the oven for 20-25 minutes. Once done, let it cool.
For the coconut filling
In the meantime, mix coconut flour, sweetener, melted cream cheese, and heavy cream together in a bowl. Wait for the brownie crust to cool enough then spread coconut filling over it. Refrigerate until set.
For the third layer
Melt dark chocolate and butter in a microwave or double boiler until fully melted. Spread the chocolate mixture on top of the coconut layer to the edges.
Top with more chopped almonds and put it back in the refrigerator for at least one hour before serving. Cut into 12 bars and enjoy.