hearts with dark and white chocolate recipe

ingredients:
100g dark chocolate
4 squares of white chocolate
90g butter
90g flour
4 eggs
130g sugar
method:

Separate white yellow,  keep yellow.
Beat the egg whites until stiff with a pinch of salt and keep cool in a container filmed.
Melt chocolate and butter in a bain marie.
Blanch the yolks with the sugar, then add flour gradually, once melted add the chocolate and butter in the preparation.
Gently fold the whites into the chocolate machine using a spatula (avoided at all costs that would fall whip the whites).
Pour into buttered molds and screened beforehand.
Dragging a white square in the middle of the chocolate paste.
Bake for 15-20 minutes at 180 ° c.
http://www.plurielles.fr/recettes-cuisine/desserts/recette-de-noel-coeurs-de-noel-aux-deux-chocolats-5625878-402.html