Preheat your oven to 400F.
Mash up your squash very well until it is smooth, almost the texture of creamy mashed potatoes. Feel free to add a tablespoon of water to help the process. You can also use a blender or food processor for this.
Whisk together the flour, salt, baking powder and spices, then add the squash. Use your hands to form a rough dough. Pour in ½ cup of the parmesan cheese and fold it into a dough.
Cover and let this dough rest for 15-20 minutes.
Lightly pat down the dough until it is 1’ thick, then cut into 16 small square pieces.
Place them on a parchment lined baking sheet, top with egg wash and dip them in the remaining ¼ cup of parmesan cheese.
Bake at 400F for 15-20 minutes or until golden brown. Serve warm!