Preheat the oven to 180°C (356°F).
Melt the dark chocolate and unsweetened soy milk together using a double boiler.
In a bowl, mix eggs, almond flour, stevia, and baking powder.
Add the melted chocolate mixture to the bowl and mix thoroughly.
Pour the batter into a mold and smooth the top.
Bake in the preheated oven for 20 minutes.
Let it cool before serving.