Preheat oven to 375°. Cut squash in half lengthwise; discard seeds. Bake squash, cut sides down, on a lightly buttered baking sheet 30 to 40 minutes or until flesh is tender when pierced with a fork. Scrape inside of squash to remove spaghetti-like strands. Transfer to a serving platter; toss with butter and 1/2 teaspoon salt. Cover and keep warm.
Heat oil in a large deep skillet over medium-high heat. Add mushrooms, next 3 ingredients, and remaining 1/2 teaspoon salt; cook 5 minutes or until mushrooms are tender and liquid evaporates. Stir in wine; bring to a boil. Add spinach and cook, stirring occasionally, 2 minutes or until wilted.
Spoon mushroom mixture onto spaghetti squash, and sprinkle with Parmesan cheese.
This was delicious. My husband cooked a spaghetti squash and needed something to do with it. This was easy and I had all the ingredients on hand (except Parmesan cheese - i used shredded mozzarella). Will make again for sure.
I made this dish as my contribution to a friend 's dinner party. It was a hit. I was reluctant to use the full 12 oz of baby spinach but glad I did as it turned out excellent. I will use a bit more fresh shredded parmesan cheese next time. Will be a great addition to Thanksgiving dinner!
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