INGREDIENTS
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3 1/2 pounds (2 medium) butternut squash, peeled and halved, seeds removed
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2 (9 oz.) packages frozen creamed spinach, prepared according to directions
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3 cloves garlic, minced
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2 yellow onions, chopped
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1 cup gruyere cheese, grated
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3/4 cup parmesan cheese, grated
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1-3 tablespoons heavy cream, or as needed
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2 tablespoons extra-virgin olive oil
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2 tablespoons unsalted butter, softened
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1/4 teaspoon ground nutmeg
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kosher salt and freshly ground pepper, to taste