To freeze :
To cook :
Chocolate and Hazelnut : Replace 1⁄2 cup of the flour with cocoa powder and add 1⁄2 cup skinned, chopped hazelnuts. Omit the cinnamon. Bake for 15 min.
Lemon and Rosemary : Replace the cinnamon and vanilla with the grated zest of 1 lemon and 1 teaspoon finely chopped fresh rosemary.
Coffee : Add 2 tablespoons medium ground fresh coffee to the butter and sugar mixture. Omit the cinnamon.
Orange and Cumin : Add the grated zest from 1 orange to the butter and sugar mixture. Replace the cinnamon and vanilla with 1⁄4 teaspoon ground cumin.