Cleaned and sliced ​​mushrooms steamed with 30 g of the butter for about 10 minutes (until tender) and scatter with salt and pepper. Pancakes rank in oiled and scatter breadcrumbs baking dish, like in a cover with stewed mushrooms and grated cheese. Pour sauce prepared from the butter, flour, milk, egg yolk and salt and bake in very hot oven until browned on topping. Cake served warm with a salad of your choice.