Try my authentic recipe for the famous Austrian Christmas cookies! In my easy Linzer Cookies recipe, the cookie dough is enriched with ground hazelnuts and almonds and flavored with a mix of Christmas spices.
Beat the butter and powdered sugar until fluffy and add the spices, vanilla, egg yolks, and rum. Mix nuts, salt, and flour in a little bowl and add to the butter mix. Combine everything and quickly shape the dough into a disc. Cool the dough in the fridge for several hours or overnight.
In a little bowl, mix the jam with the rum and spread this boozy jam on the bottom half of your cookies. Dust the lattice-part of the cookie with icing sugar. Top the jam-half with the upper half and store the cookies in metal tins.
Linzer Cookies get better with time and should rest at least a week. The can be stored in cookie tins at room temperature, or slightly cooler for over a month.