Preheat the oven to 180°C (356°F).
Melt dark chocolate and butter together using a double boiler.
Beat eggs and sugar until foamy.
Mix the melted chocolate and butter, egg mixture, and almond flour together.
Pour the batter into a tart mold.
Bake in the oven at 180°C for 20-25 minutes.
Let cool and add your desired toppings.