Ingredients: Gather chocolate, butter, sugar, eggs, flour, and optional additions like vanilla extract or liqueur.
Preparation: Preheat the oven and grease two ramekins or small oven-safe dishes.
Melt Chocolate and Butter: Melt chocolate and butter together in a microwave or double boiler until smooth.
Mix: In a bowl, whisk together sugar, eggs, and any optional additions until well combined. Gradually add the melted chocolate mixture, stirring until smooth.
Add Flour: Gently fold in flour until just combined. Be careful not to overmix.
Bake: Divide the batter evenly between the prepared ramekins. Bake in the preheated oven until the edges are set but the center is still slightly jiggly, about 10-12 minutes.