In a bowl over simmering water melt the chocolate and butter together.
In a kitchen aid using a paddle attachment slowly combine the eggs and sugar together until well incorporated.
Slowly add the melted chocolate and butter to the eggs and sugar and mix well on a medium speed.
Stop the machine and add all the flour into the mix.
On a slow speed fold through the flour but be careful to not overmix the mixture.
Chill the mixture in the fridge for 30 minutes. Preheat the oven to 180°C/Fan 160°C/ Gas 4. Grease your moulds with butter and dust with cocoa powder. Measure 80g of chocolate mixture into each.
Bake for 8-9 minutes (if mix is weighed at 80g). Remove from oven and remove carefully from the moulds. Dust with cocoa powder and serve with cream or vanilla ice cream.