Pour oats with boiling water, cover the bowl with a lid, leave for 10-15 minutes.
Thoroughly rinse and then grate the mushrooms.
Blend tomato and onion with a mixer until smooth. Heat a skillet over high heat drizzled with oil. Add grated mushrooms, chopped tomato and onion.
Fry about 3-5 minutes, stirring occasionally. Let it cool.
Mix fried mushrooms with eggs, flour, grated cheese, sour cream. Season with salt and spices. Combine all ingredients in a bowl and mix.
Fry on the both sides about 4-5 minutes until brown or bake in the oven.