For 4 people
Preheat the oven to 200°C
Melt the butter and chocolate in a saucepan
Whisk the eggs and sugar in a bowl to obtain a foamy cream
Add the butter and chocolate mixture as well as the flour in the cream
Beat the mixture obtained for 2 minutes
Butter the mold, then pour the dough in it
Bake for 15-20 minutes.