Rice boil until tender. Peel the onion, finely chop and sauté in butter. Mushrooms grind and add to the onion, stirring; continue cooking until the mushrooms are ready. Mix the cooled rice and mushrooms.
Baking dish lined with foil. On the foil lay out strips of bacon.
Cheese grate on a fine grater, add to the beaten egg and cream, mix well. The resulting mixture is sent to the rice with mushrooms and mix again.
Add capers. All neatly put into the form of bacon and bake it in the oven for 1 hour. Bon appetit!