This dessert is one of most popular ones of Russian children since at least 19th century. It is more or less a sunflower seed brittle. When I was in Russia, Kozinaki was sold on the streets. It is very good and easy to make.
1Stir-fry the sunflower seeds on a dry skillet.
2Pour the sugar, lemon juice, and water into a sauce-pan with a thick bottom, and heat on a low heating until you get a gold-colored syrup.
3Pour seeds into syrup, and stir well.
4Place on a baking paper, or other non-sticking surface, and make an even layer.
5Cut into rectangles while hot, and let to cool.
6Keep in a glass can under a lid for up to 2 weeks.