Butter 8 ramekins and keep it aside.

Using a double boiler melt the butter & chocolate and keep aside to cool

In a separate bowl combine egg: sugar, vanilla essence flour.

Add the chocolate mixture & mix until blended. Divide mixture evenly among the ramekins and place it on the baking tray.

Bake until the tops are firm and cracked but the chocolate beneath is hot and gooey about 15-18 minutes at 180 deg