Instructions

1. 1
   Preheat a conventional (i.e. not convection) oven to 350 °F (180 °C).
2. 2
   Place the apple slices in a buttered baking pan. Sprinkle them with lemon juice for flavor and to prevent them from turning brown. Mix in the water and cinnamon to taste.
3. 3
   To make the topping, combine the butter, brown sugar, oats, flour, cinnamon, salt, and nutmeg. Crumble the ingredients in a bowl with your fingers to create a uniform mixture.
4. 4
   Cover the apples with the topping. If desired, sprinkle some rolled oats sparingly on the surface for added texture.
5. 5
   Bake for 30–45 minutes in the preheated oven, or until the apples are soft and the topping is crisped.
6. 6
   Serve with ice cream or whipped cream.