Step 2
In the top of a double boiler, melt the butter with the chocolate. Remove from the heat and whisk in the sugar, whole eggs and egg yolks. Whisk in the flour.
Step 3
Scrape the batter into the ramekins and bake for 10 minutes, or until the sides of the cake are set, but the center is still slightly loose. Let the cakes cool for 1 minute, then run a thin knife around the sides and invert them onto plates. Dust the cakes with cocoa and confectioners’ sugar and serve.