01 -
Wash, core, and slice the apples into 1/2-inch wedges. Toss with lemon juice while you set up the skillet.
02 -
Melt the butter in a large skillet over medium heat. Add the apple cider, brown sugar, and salt, then stir until the sugar starts to dissolve.
03 -
Add the apple slices and turn them gently to coat. Cover and cook over medium-low heat for 10-12 minutes, stirring once or twice, until the apples are just fork-tender.
04 -
Stir the cornstarch and cold water again, then pour it into the skillet. Cook uncovered for 1-2 minutes, gently folding, until the sauce looks glossy and lightly thickened.
05 -
Turn off the heat. Stir in the cinnamon, nutmeg, and vanilla if using. Let the apples rest for 3 minutes before serving so the sauce clings to the slices.