Peel potatoes and onion and cut into 2 cm pieces. Heat oil in a pot. Add potato, onion and 100 g bacon cubes and stir-fry for 5 minutes. Pour in soup and simmer covered for about 20 minutes. Add cream and peas and simmer for another 5 minutes. Puree so that peas and potato pieces remain. Fry remaining bacon cubes in a pan without oil.
Serve soup, garnish with bacon cubes and parsley.