Preheat oven to 400F and line a sheet pan with parchment paper.
Cut the squash in half and scoop out the seeds with a spoon. Slice each half into slices.
Lay squash slices onto the sheet pan and brush with olive oil. Sprinkle with onion powder, salt, pepper and Parmesan cheese. Flip over and repeat this on the other side.
Bake for 20-25 minutes or until squash is tender. Sprinkle with a little more Parmesan cheese before serving, if desired.
Note: Metric ingredient measurements are provided as a courtesy using a third-party calculator and are rounded to the nearest unit. The recipes provided on this site have not been tested with metric measurements and their accuracy cannot be verified.
The nutritional information provided is based on third-party calculations and is an estimate only. Accurate nutritional facts will vary based on the particular brands used, portion sizes, measurement accuracy and more.