I did this last week, and forgot to reply. I did a molten version: 2 heaping Tbsp cocoa powder, bit of baking powder, 2 drops of Sweetzfree, 1 tsp granular Sugar Twin (cyclamate), a few drops of vanilla extract, 1 egg, a pat of butter, and a square of 85% Lindt dark chocolate. It was really good. Rich and satisfying. Definitely a keeper.