1/2 cup chopped walnuts 2 tablespoons unsalted butter 2 Granny Smith apples, peeled, cored, cut into 1/4-inch slices 1/2 teaspoon cinnamon 1/2 teaspoon vanilla extract 1/4 cup pure maple syrup 1 pint vanilla ice cream Step 1 Place a medium skillet over medium heat. Add walnuts and cook, shaking pan often, until nuts are golden, 2 to 3 minutes. Transfer to a plate to cool. Step 2 Melt butter in same skillet over medium heat. Add apples, cinnamon and vanilla and cook, stirring