For the spaghetti with shrimp, cook the spaghetti in salted water until al dente and set aside. Prepare the vegetable soup.
Peel and finely chop the onion. Melt butter in a pot and sauté onions. Deglaze with white wine, reduce and add soup.
Finely chop dill and stir in with creme fraiche and bring to a boil. Season to taste with salt and pepper. Add shrimps and heat briefly in the sauce.
Mix everything together and serve the spaghetti with shrimp.