Grate the peeled potatoes and onion together in a bowl. Add the beaten egg, salt, and pepper, and mix well.

Heat sunflower oil in a frying pan over medium heat. Spoon the potato mixture into the pan, flattening them gently. Fry each side for about 5-7 minutes until golden brown.

Remove from the pan and drain on paper towels. Serve the hot potato pancakes with a dollop of sour cream on top.

Подавайте деруни гарячими, зі сметаною або гарніром з зелені. Залишки можна зберігати в холодильнику не більше 2 днів.