For the Linzerschnitten stirred first preheat the oven to 160° hot air. Flour the cake pan or line with baking paper.
Separate the eggs and beat the egg whites until stiff and chill. Mix the soft butter with sugar, cinnamon, clove powder, rum and egg yolks until creamy. Mix flour with baking powder and stir into the dough alternately with the nuts. Pour 2/3 of the dough into the cake pan, smooth it out and spread with jam (any kind).
Use the remaining batter to pipe a lattice, as well as a border all around. Bake the Linzerschnitten stirred for about 20-30 minutes.