Slice both ends off of the squash. Grate the squash using a box grater, then place in a large bowl and sprinkle with the salt.
Allow the squash to sit for 10 minutes, then, squeeze the grated squash thoroughly over the sink in handfuls, and place in a dry bowl.
Meanwhile, heat a large skillet over medium-high heat. Add the minced garlic, and green onion, cook, stirring constantly for 3 minutes, then remove from the heat.
To the squash (grated and squeezed dradd the beaten egg, garlic and green onion mixture, both cheeses, panko, and salt and pepper to taste.
Add the remaining olive oil to the same skillet you used for the garlic and onion over medium high heat.
Once the oil is hot, add the squash mixture to the pan in Tablespoonfuls, using a spatula to flatten them out.
Cook each fritter for about 2 minutes per side until golden brown.
DIPPING SAUCE:
Whisk all ingredients together in a medium bowl. Chill until ready to serve.
Notes
NOTE: These squash patties are best when eaten the same day that they are made.NOTE: DO NOT skip draining and wringing out the grated squash!