Step 1 Preheat the oven to 180 ° C (thermostat 6). Step 2 Put the chocolate to melt in a bain-marie (without butter or anything else). Step 3 Meanwhile, mix all the other ingredients (by first mixing yeast and flour, otherwise they mix poorly). Step 4 Add the melted chocolate. Step 5 Butter a pan and pour out the dough. Step 6 Put in the oven for 15 min at 180 ° C (thermostat 6), then 15 min at 150 ° C (thermostat 5). Step 7 The cooking is different according to the furnaces. Mine heats a lot ... Step 8 Check the cooking: it must be cooked on the top and moist inside.