Preheat oven to 400°F.
Cut the squash in half lengthwise and scoop out the seeds.
Lightly drizzle the flesh with olive oil and season with salt and pepper.
Roast in the oven, cut-side up for about 40 minutes or until tender.
Let it cool slightly and with a fork shred the squash into strands.
Place in strainer to drain any excess liquid and use paper towels to remove water.
In a large bowl, combine the sliced green onions, chopped parsley, chopped sage leaves, and minced garlic.
Add squash to the bowl.
Fold in the egg, cheese , flour, salt, and pepper.
Toss all of the ingredients together until the mixture is well combined.
Using a soup spoon, scoop a generous amount of the squash mixture into your hands and form into patties, one by one, and lightly flatten.
Heat oil in a large pan and fry your latkes on both sides. Try to make them thin so they will be crispy!
Transfer the cooked latkes onto a paper towel-lined plate.