Hamburber Cookies with York Peppermint patties. Just take nilla cookies, coloured icing and york peppermint patties for the meat patty. To get the sesame seeds to stick seperate the white out of an egg and whisk it until frothy. Use a pastry brush to brush the tops of the cookies and then drop the sesame seeds on top and let them dry. Keeps well in the freezer and are absolutely delicious!