- 3 Granny Smith apples, cut into 1/2-inch dice
- 3/4 cup brown sugar
- 1/2 cup old-fashioned oats
- 1/2 cup all-purpose flour
- 3/4 teaspoon ground cinnamon
- 3/4 teaspoon ground nutmeg
- 1/3 cup butter, softened
- Preheat oven to 350 degrees F (175 degrees C).
- Spread diced apples into the bottom of a 9-inch square baking dish.
- Stir brown sugar, oats, flour, cinnamon, and nutmeg together in a bowl. Mash softened butter into the sugar mixture with a fork until you get a crumbly consistency; spread over apples to cover.
- Bake in preheated oven until the apples are tender, about 30 minutes.