- 3 pounds apples – peeled, cored, and sliced
- 1 tablespoon butter, cut into small pieces
- 2 tablespoons lemon juice
- 1 cup all-purpose flour
- 1 cup rolled oats
- 1 1/2 cups brown sugar
- 1 1/2 teaspoons ground cinnamon
- 1 teaspoon salt
- 1/2 cup butter
- Preheat oven to 375 degrees F (190 degrees C). Butter a 9×13-inch baking dish.
- Spread apple slices into prepared baking pan. Dot with 1 tablespoon butter pieces and sprinkle with lemon juice. Mix flour, rolled oats, brown sugar, cinnamon, and salt together in a bowl. Cut butter into oat mixture until the mixture resembles coarse crumbs; spread over apples.
- Bake in the preheated oven until topping is browned and apples are soft and tender, about 30 minutes.