Boil the potatoes, drain all the water, knead. Add the fried onions. Cool. Warm the potatoes, beat the egg, add the spices, mix well.

Pour the flour.

Carefully grind. You should get air mass.

Butter to fry the finely diced mushrooms (if you fry on any other the taste of these mushrooms is not felt). If there are white mushrooms, then they will, in General, super! Cool. Paper for baking grease with vegetable oil (so the dough doesn't stick) and put it with the potato mixture rectangle. The center put the cooled mushroom stuffing.

Using the paper to roll the roulade. Edges to trim by hand. Do not attempt to turn on the cooking foil - it will still have to pass on to the pan.

In a preheated 180 degree oven to put our handsome and leave for 40 minutes to languish.

After baking, immediately remove the paper, allow to cool slightly. Can be cut into about 15 minutes. Delicious hot or cold for Breakfast. My older Eureka in the morning, smeared with mayonnaise and had a nice Breakfast with a sweet tea. Bon appetit!