Savory rolls

It is necessary:

4 eggs,
one cup flour,
the pinch of baking powder,
cup yogurt,
half a teaspoon of salt,
200 g cheese,
200 g ham (chicken breast)
a little mayonnaise.

Preparation:
 
Mix the egg yolks, add flour, yogurt, baking powder and egg whites tightly whisked and bake in a greased baking pan.
On the hot dough put the mixture of cheese, chopped ham and mayonnaise, and roll up into a roll. When cool, spread the mayonnaise and sprinkle with grated cheese.