"Brioche is the secret to this savory dish: The fluffy, eggy bread soaks up the cream and broth to produce a moist, custardy interior. Sausage, leeks and Gruyere are a go-with-everything combination, so this dish will fit right into any holiday buffet...."
INGREDIENTS
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4 tablespoons unsalted butter
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8 cups 1/2-inch cubes brioche, crusts removed
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8 ounces sweet Italian sausage, casings removed
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1 cup finely chopped butternut squash
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4 leeks, white and light green parts only, thinly sliced
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1 tablespoon fresh thyme leaves, chopped
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Kosher salt and freshly ground black pepper
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1 1/2 cups chicken broth, such as Imagine
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1 cup heavy cream
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1/4 cup fresh flat-leaf parsley leaves, chopped
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3 tablespoons minced fresh chives, plus more for garnish
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4 large eggs
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2 cups grated Gruyere