Potatoes clean, wash and cut into small pieces. Boil in a liter of water. The water is not drained!!
Onions and mushrooms cut at random, but not too large (a couple of mushrooms to leave for decoration)
Melt a piece of butter.
And fry the onion until Golden brown.
Add mushrooms to the onion.
Fry until cooked mushrooms.
Add mushrooms and onions to the potatoes (again, water does not drained!).
Adding milk or cream. Sprinkle with salt and pepper to taste.
And grind everything with a submersible blender to a creamy texture. Bring the soup to a boil and cook for 5 minutes.
Meanwhile, arbitrarily cut white bread.
Cut and fry the remaining mushrooms.
Melt the remaining butter and add the bread. For taste I add pepper and dried dill. Send croutons in the oven (since I have no oven, I cook croutons in an aerogrill at a maximum temperature of - four minutes).