While the puff pastry thaws, peel the pears, remove the core, and cut into dice.
Sauté them in melted butter with a little sugar.
Turn off the heat and add the grated orange zest, bread crumbs, and pine nuts.
Roll out a sheet to a thickness of three millimeters, then cut out a star with a knife.
Pull the other sheet, place the star just made on top, and cut out another slightly larger star following the contours.
Put the smaller star on a buttered baking sheet, brush it with beaten egg, and place the sautéed fruit in the center.
Cover with the larger star, press firmly along the edges, and seal the cake.
Brush the entire star with the egg, score it very lightly with a knife, and bake at 220 degrees for about twenty minutes.
Serve warm, dusted with a little sugar.