My girlfriend recently made a delicious chocolate fondant. Saving the The Guardian's recipe:
Ingredients (2 servings)
60g unsalted butter, cut into dice, plus extra to grease
1 tbsp cocoa powder
60g dark chocolate, broken into pieces
1 egg and 1 egg yolk
60g caster sugar
1 tbsp plain flour
Preparation
Pre-heat the oven to 200C if cooking immediately, and put a baking tray on the middle shelf. Butter the inside of 2 small ramekins or pudding moulds, and then put the cocoa in one and turn it to coat the inside, holding it over the second mould to catch any that escapes. Do the same with the other mould.
Put the butter and chocolate into a heatproof bowl set over, but not touching, a pan of simmering water and stir occasionally until melted. Allow to cool slightly.
Vigorously whisk together the egg, yolk, sugar and a pinch of salt until pale and fluffy. Gently fold in the melted chocolate and butter, and then the flour. Spoon into the prepared moulds, stopping just shy of the top – at this point the mixture can be refrigerated until needed, or even frozen, as the puddings will not wait around once cooked.
Put on to a hot baking tray and cook for 12 minutes (14 if from cold, 16 if frozen) until the tops are set and coming away from the sides of the moulds. Leave to rest for 30 seconds and then serve in the ramekins or turn out on to plates if you're feeling confident – they're great with clotted cream or plain ice cream.