In a bowl, add the eggs and sugar, Mix with the help of a fouet (wire whisk) Then add the butter and mix until it forms a cream; Add the chocolate powder and continue mixing, Add the wheat flour and mix until the dough is very homogeneous, Pour this dough into a shape (28×30), greased and floured with chocolate, Spread the dough and then take it to bake in a preheated oven, 180ºC, for about 35 minutes.