01 - Preheat oven to 400°F. Line two baking sheets with parchment paper.
02 - Combine granulated sugar and ground cinnamon in a small bowl. Set aside.
03 - Roll out puff pastry sheets on lightly floured surface. Brush each sheet with melted butter and sprinkle evenly with cinnamon sugar mixture.
04 - Using pizza cutter or sharp knife, cut each sheet into 4 long strips approximately 1 1/2 inches wide.
05 - Take one strip and twist several times. Shape into bunny silhouette: form oval for body and loop end for head, pinching to secure. Create ears from small pastry pieces if desired. Repeat with remaining strips.
06 - Place bunny twists on prepared baking sheets, spacing evenly apart.
07 - Whisk egg with milk in small bowl. Brush each twist lightly with egg wash mixture.
08 - Press chocolate chips or raisins into pastry for eyes if using.
09 - Bake for 13-15 minutes until twists are golden brown and fully puffed.
10 - Remove from oven and let cool slightly. Dust with powdered sugar before serving.