Fill a large bowl halfway with water and stir in the lemon juice. Add the apples to the lemon water as you peel, core and slice them 1/4 inch thick. If desired, cut the slices into smaller bite-sized pieces.
1/2 lemon, 6 medium apples
Preheat the oven to 350°F. Coat a 9×9-inch baking dish with nonstick cooking spray.
nonstick cooking spray
Combine the brown sugar, cinnamon, nutmeg and melted butter in a small bowl. Stir until thoroughly combined.
1/2 cup brown sugar, 2 tsp ground cinnamon, 1 tsp ground nutmeg, 4 tbsp salted butter
Drain the apples and pat them dry. Spread the slices evenly in the prepared baking dish.
Spoon the brown sugar mixture evenly over the apples.
Bake uncovered for 30 minutes, or until the apple slices are tender when pierced with a fork but not falling apart. Serve warm.