INGREDIENTS
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1 pound Yukon gold potatoes, peeled and sliced thinly
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1 pound assorted mushrooms, scrubbed clean and roughly chopped
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1 (10.75 oz.) can cream of mushroom soup
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1 cup Gruyere cheese, grated
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1/2 cup parmesan cheese, grated
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1/2 cup low-sodium chicken stock
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1/3 cup dry white wine
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3 cloves garlic, minced
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2 shallots, minced
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2 tablespoons unsalted butter
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1 tablespoon extra-virgin olive oil
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1/2 teaspoon fresh thyme leaves, chopped
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1/2 teaspoon fresh sage leaves, chopped
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kosher salt and freshly ground pepper, to taste