Ingredients
Scale
Topping:
- 1 cup all-purpose flour
- ½ cup light brown sugar
- ½ cup white sugar
- ½ teaspoon ground cinnamon
- ¼ teaspoon ground nutmeg
- 1 pinch salt
- ½ cup cold butter, cut into pieces
- 1 cup chopped walnuts
Apple Filling:
- ⅓ cup white sugar, or to taste
- 1 tablespoon cornstarch
- ½ teaspoon ground ginger
- ½ teaspoon ground cinnamon
- 6 cups apples – peeled, cored and chopped
- 2 tablespoons lemon juice
Instructions
- To make the topping: Mix flour, brown sugar, white sugar, cinnamon, nutmeg, and salt together in a bowl. Add butter and mix with your fingers or a fork until coarse crumbs form. Stir in walnuts.
- To make the apple filling: Whisk sugar, cornstarch, ginger, and cinnamon together in a small bowl.
- Place apples in a slow cooker. Stir in cornstarch mixture. Add lemon juice and toss to combine. Sprinkle topping over apples. Cover and cook until apples are tender, on Low for 4 hours or High for 2 hours.
- Turn off the slow cooker, partially uncover, and let stand until topping has hardened, about 1 hour.