person(s)
Preheat the oven to 340°F.
Melt the dark chocolate with the butter gently in a double boiler or microwave.
Add the sugar and mix.
Add the eggs one at a time.
Add the flour and a pinch of salt, mix until you obtain a smooth dough.
Pour the mixture into a heart-shaped mold, previously buttered.
Bake for 20 to 25 minutes, depending on how soft you want them to be.
Allow to cool before carefully removing from the mold.
