Cream butter and cheese in a medium bowl. Beat until fluffy.
Add flour, then mix well. Collect the dough into a ball, wrap it in plastic and refrigerate it for at least an hour.
Roll dough to 1/8 inch thickness on lightly floured surface.
Once the dough is rolled, cut it with a pizza cutter into squares between 5 and 8 cm across.
Place 5 cm apart on lightly greased cookie sheet. Spoon 1 tsp jam on each cookie.
Fold opposite sides together. Bake at 180°C for 15 minutes.
Cool completely on wire racks and sprinkle with
confectioner's sugar (we ommited this).