Pass the mushrooms and onions through a meat grinder and fry in vegetable oil for 10-15 minutes. Knead the dough from flour, starch, milk and eggs. Add the fried mushrooms and onions to the dough, salt and mix. Bake the pancakes in a preheated pan on both sides until tender (I got 14 pancakes with a diameter of 16 cm).
For the filling, grate the cheese on a coarse grater. Chop the green onion finely.
Turn on the oven to heat up to 200 ° C. Place the pancakes in a baking dish, sprinkle with cheese and green onions.
Bake the pancake cake with cheese and green onions for 10-15 minutes in the oven preheated to 200 ° C.
Transfer the finished cake to a dish, cut into portions and serve.