Slice acorn squash in half and scoop out and discard seeds.
Slice squash into 1/2" slices and place into a mixing bowl.
Drizzle squash with olive oil and use a brush to coat evenly.
Remove leaves from sprig of thyme by holding to the uncut end and sliding your fingers between the stem. Leaves should slide right off. Sprinkle thyme on squash.
Sprinkle squash with half of the grated Parmesan cheese and mix the spices well.
Place squash slices in a single layer on a baking sheet. Sprinkle with any remaining Parmesan cheese.
Season everything with salt and pepper.
Roast acorn squash in the oven for 25-30 minutes or until tender. Serve hot.
Notes
If the acorn squash is hard to cut, poke some holes with a fork and microwave for about 1-2 minutes. Be careful not to over microwave the gourd and begin to cook the inside of it!You do not need to peel the rind before roasting.You can eat the skin, it's soft and not chewy or anything if you'd like, or you can cut it off when you eat it.