To prepare a spinach stuffed zucchini recipe, you will first need to prepare your zucchini. Cut the zucchini in half lengthwise, then scoop out the seeds and cut the flesh into small cubes. Place the cubed zucchini flesh in the bottom of an 8 x 8 inch baking dish. Fill each cavity with about 1 tablespoon of the spinach mixture. Top with shredded Parmesan cheese. Bake at 400?F (204?C) for 20 to 25 minutes, or until the cheese is melted and the squash is tender. Remove from the oven and let sit for 5 minutes before serving.