Apple Cake, with crunchy topping

Note: These recipes use NZ measurements. 1 c = 1 cup = 250 ml. 1 T = 1 tablespoon = 15 ml. 1 D = 2 teaspoons. 1 t = 1 teaspoon = 5ml. If you're in America, you may find you need a little extra baking powder in recipes that use it.

2 2/3 cups wholemeal self raising flour
1 t cinnamon
1/2 t nutmeg
1 C caster sugar
185g butter, melted
1/2 C water
3 eggs, beaten
3 medium apples, peeled, sliced
60g butter, melted
1/2 c brown sugar, firmly packed
1/4 t cinnamon
1/4 t nutmeg

Grease and line 23cm cake tin. Sift dry ingredients into large bowl. Add butter water and eggs, then mix well. Fold in apples then spread mixture into tin. Spread over crunchy topping. Bake at 180C for 1 1/4 hours. Cool cake in pan.
CRUNCHY TOPPING: combine all ingredients and mix well.

Source: Women's weekly