INGREDIENTS
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3.5 pounds russet potatoes
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1 small onion or 4 shallots, peeled and sliced very thin
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3 tablespoons unsalted butter, melted
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3 tablespoons extra-virgin olive oil
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Kosher salt
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1/2 teaspoon pepper
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4 - 6 fresh thyme sprigs or leaves
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3 ounces bacon, cubed