INGREDIENTS
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Four 10-ounce packages frozen chopped spinach, thawed and drained
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3 1/2 sticks (28 tablespoons) unsalted butter
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6 scallions, thinly sliced
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3 cloves garlic, minced
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3 tablespoons all-purpose flour
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1 1/2 cups whole milk
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Kosher salt and freshly ground black pepper
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8 ounces feta cheese, crumbled
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1 cup fresh Italian flat-leaf parsley, roughly chopped
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1/2 cup fresh dill fronds, roughly chopped
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6 large eggs, beaten
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One 1-pound package phyllo dough sheets, thawed if frozen