"Did you know that potatoes aren't the only thing that can be made in to tasty gratin side dish!..."
INGREDIENTS
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2 Large Bunches Russian kale, or black kale, stems removed and roughly chopped (about 20 cups)
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1 sourdough loaf, cut into 1/2-inch Slices
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6 tablespoons butter, plus more
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1/2 cup shallots, sliced
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1 teaspoon red pepper flakes
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1/4 cup all-purpose flour
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1 1/2 cups milk
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1 1/2 cups heavy cream
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1/2 pound gruyere cheese, grated
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1/2 pound sharp white cheddar cheese, grated
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1/2 cup crème fraiche or sr cream
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1/2 cup Parmigiano-Reggiano, freshly grated
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1/2 teaspoon Freshly Grated Nutmeg