01 - Preheat oven to 400°F and line a baking sheet with parchment paper.
02 - Unroll the puff pastry on a lightly floured work surface.
03 - Brush entire surface of the pastry with melted butter.
04 - Combine granulated sugar and ground cinnamon in a small bowl; sprinkle evenly over buttered pastry.
05 - With a sharp knife or pizza cutter, slice the pastry into 12 equal strips, each about 3/4 inch wide.
06 - Thread each strip onto a wooden skewer, zig-zagging to create a tree shape, starting wide and tapering to the top.
07 - Place shaped trees onto prepared baking sheet, evenly spaced. Brush each with beaten egg for a golden finish.
08 - Bake for 12–15 minutes, until pastry is puffed and golden brown.
09 - Let trees cool for 5 minutes. Optional: dust with powdered sugar and top with star-shaped decoration.