In a bowl, mix the yeast, half the sugar and milk and stir gently until the yeast and sugar are completely dissolved.
In another bowl, combine egg, oil and melted butter.
Add the dry ingredients in the bowl of a stand mixer starting with the flour, remaining sugar and baking powder. Mix well.
Add the mixture of egg, butter and oil and add the mixture of yeast, milk and sugar and mix gently, for several minutes, until obtaining a homogeneous dough. Add the salt and knead again for 5 minutes.
Form a ball by working the dough on a flat surface. Then place it in a large salad bowl covered with a damp cloth and let it rise for an hour in a warm place away from drafts.
Place the dough on a work surface and divide it into 4 equal pieces. Roll each piece until to form a cylindrical shape.
Cut 3 or 4 rolls diagonally into each cylinder. Roll each bread in the breadcrumbs and place on a sheet covered with parchment paper, allowing some space between them. Cover with a dry cloth and let the dough rise again for 20 minutes.
Preheat oven to 375 F / 190 C for 15 minutes. Bake the breads for 15 minutes.