Clean the prunes well and remove the pits. Put them in water to stew until completely soft and slightly mushed. Then pass them through a sieve.
Combine the sugar with the resulting paste and boil until thickening. Before removing from the heat, add the walnuts. On a greased paper towel, spread the mixture in a layer 1″ (2.5 cm) thick, sprinkle with sunflower seeds.
Leave it to dry, then cut it into uniform pieces or shapes. Optionally, you can roll thus prepared prune-flavored Turkish delight in powdered sugar, or coconut flakes. Keep it stored in boxes, arranged in rows and separated by paper.