Ingredients

12 tablespoons (1 1/2 sticks) butter, divided

2 pounds onions, sliced

2 tablespoons (packed) chopped fresh thyme

4 teaspoons fine sea salt, divided

2/3 cup water

2/3 cup dry white wine

4 teaspoons sugar

• 2 1/2 pounds Yukon Gold, yellow Finn, or German Butterball potatoes, peeled, cut into 1/4-inch-thick rounds
• 2 pounds tart apples (such as Granny Smith, Pippin, or Pink Lady), peeled, halved, cored, cut into 1/4-inch-thick slices

Description

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