Dice the onions and fry them with 2 tablespoons of oil. Roughly chop the sunflower seeds with the blender and fry them. Season with salt, vegetable stock, pepper and marjoram; Pour in 500 ml of water and bring to the boil. Put everything in a bowl; Mix in the bread cubes, garlic, parsley and pepper pieces and let stand for about 15 minutes. Thicken with breadcrumbs until cakes can easily be formed. Fry in hot oil until crispy brown. Serve hot or cold.