1. 1. Preheat the oven to 425°F (220°C)

2. 2. Grease four ramekins with butter and dust with cocoa powder

3. 3. Melt the chocolate and butter in a double boiler until smooth

4. 4. In a separate bowl, whisk together eggs, egg yolks, and sugar until pale and fluffy

5. 5. Gently fold the melted chocolate mixture into the egg mixture

6. 6. Add flour and mix until just combined

7. 7. Divide the batter evenly among the ramekins

8. 8. Bake for 12-14 minutes until the edges are set but the center is still soft

9. 9. Let cool for 1 minute before inverting onto plates

10. 10. Serve warm with a dusting of powdered sugar and a scoop of vanilla ice cream