This can be made with zucchini or a mix of the two squashes.
Halve the squash lengthwise or cut into rounds. Heat oil in skillet, add squash, and sauté over medium-high heat until lightly colored around the edges, about 3-4 minutes. Add green onions and a couple of spoonfuls of water. Lower heat and cover. Cook until squash is tender, about 6 minutes. Add parsley and salt and pepper to taste.