Traditional Apple Crumble

This is one of those old-fashioned traditional desserts, that is just perfect on a chilly night. It's super quick to make and goes perfectly with a nice healthy portion of Bird's custard!
Fruit filling:
6 apples, peeled, cored, sliced
1/3 cup orange juice
3 Tbsp lime juice
1/3 cup brown sugar
Crumble topping:
1 1/4 C flour
1/4 C butter, well chilled
4 TBsp brown sugar
1/4 C sugar
2 tsp cinnamon
1/4 tsp nutmeg
Preheat the oven to 375 degrees.
Prepare the apples and cook them gently in the fruit juice for about 10 minutes or so, until they are half cooked. Stir in 1 tsp cinnamon, 1/4 tsp nutmeg and the brown sugar to the fruit mixture.
While the apples are cooking, sift the flour into a mixing bowl and then grate in the chilled butter. Rub the butter into the flour so that you have a crumble texture. Add the brown and white sugar, cinnamon and nutmeg, and stir gently.
Butter a casserole dish, or one of those nice oval Le Creuset dishes, and then pour in the apple mixture. Sprinkle the crumble mixture over the top and bake for about 40 minutes until the apples are cooked and the crumble is golden-brown.