01 -
Set the oven to 350°F (175°C) to prepare for baking.
02 -
Peel, core, and slice apples into 1/4-inch thick pieces. Place in a large bowl and toss with lemon juice to prevent browning.
03 -
In a small bowl, combine granulated sugar, cinnamon, nutmeg, cloves, and salt. Sprinkle evenly over the apples and toss to coat thoroughly.
04 -
Transfer the apple mixture to a greased 9x9-inch baking dish, spreading evenly.
05 -
In a separate bowl, combine flour, rolled oats, and brown sugar. Add cold butter cubes and blend using a pastry cutter or fingertips until the mixture resembles coarse crumbs.
06 -
Fold in chopped pecans or walnuts if using, to add texture and flavor.
07 -
Evenly sprinkle the crumble topping over the apples in the baking dish.
08 -
Place the dish in the oven and bake for 35 to 40 minutes until the topping is golden brown and the apples are tender.
09 -
Remove from oven and allow to cool briefly before serving warm, optionally with vanilla ice cream or whipped cream.