2 egg whites
1 cup yogurt
1 baking powder
In a container of yogurt mix with the egg whites , baking powder and salt .
Once we are well mixed begin to add the flour and softened butter .
Add flour until it forms a dough that is separated from the hands .
Then divide the dough into several parts and each of open separately and you take the cheese , then wrap in round shape and place in baking pan .
Above the varnished with egg yolk .
Inserted into the oven and roasting temperature of 250 degrees Celsius while taking gold . You Let them be good .