Chop walnut finely, set aside
Mix flour, salt in a bowl, then stir in cranberries to coat, set aside
Melt butter for 30 sec in microwave
Mix melted butter and sugar in a bowl
Beat in egg until just combined
Stir in dry ingredients
Dump on parchment lined square pan
Bake for 30-40 mins on preheated 350 F
Cool on rack before slicing