Roast the sunflower seeds dry in a pan, let them cool and turn them 3-4 times through the meat grinder until a very fine mixture is formed.
Heat the sugar and flour in a pan, stirring constantly, until a darker mass is obtained. Then add the water and boil a syrup.
Mix the syrup with the sunflower seeds and add the oil. Pour into a baking dish and press in well with your hands. Put in the refrigerator for several hours, preferably overnight.
Tip: Any leftover halva must be stored in the refrigerator.