Grind the oats finely in a blender.
In a bowl, mix the ground oats, cocoa powder, almond flour, salt, and sweetener.
Add almond milk and coconut oil, then knead into a dough.
Spread the dough thinly on a baking tray lined with parchment paper.
Bake in a preheated oven at 180°C (356°F) for 12-15 minutes, then let it cool.
Break into crumble pieces of a bite-sized portion.