For the creamed cucumbers, peel and halve the cucumbers, scrape out the seeds with a soup spoon, and cut into slices about 1 cm thick. Z
Peel the onion and chop finely. Melt butter, sauté onion in it. Sprinkle flour over it, pour in soup and let it boil down on low heat for about 10 minutes.
Add cucumber slices and cook until soft. Whisk sour cream, wash parsley, shake dry, chop finely. Add sour cream and parsley to the cucumbers, season with salt and pepper, season with lemon juice.