Almond-topped Apple Pie

Ingredients
For a 9" pie dish:

3 medium apples, peeled and chunked
1 tsp cinnamon
200g caster sugar
170g unsalted butter, softened
125g plain flour
50g almonds, chopped
1 beaten egg
Instructions
1) Preheat oven to 180 degrees C.
2) Mix the sugar and butter.
3) Sieve in the flour, followed by the almonds and egg. Stir until everything is mixed in well.
4) Add the apples into a 9" pie dish, mixing in the cinnamon, plus a bit of sugar if required.
5) Spread the almond mixture over the top and bake for about an hour.