Onion Sandwiches

Recipe appetizers for 4 people based on Onion - cooking method oven.

Preparation:

Preparation: Knead the dough for 3 minutes, cover it and let it rise in a warm place for 30 minutes. Knead it for a few more minutes, let it rest for 15 minutes, then roll it out into a rectangle 1 cm thick. Brush it with oil and spread the sliced onions and chopped sage on it. Roll the dough up on itself and cut the cylinder obtained into 3 cm thick slices. Arrange them on the greased plate, brush them with the egg yolk beaten with a little oil and cook them in a preheated oven at 220 degrees for 25 minutes.