Granny's Dream Cake

My granny used to bake this every Christmas when I was growing up, so I tend to feel a little nostalgic for Christmases of my childhood when I bake this. It's a wonderful cake, and looks beautiful finished off with a light dusting of confectioner's sugar.
Recommended baking soundtrack: Dylan Thomas reading "A Child's Christmas in Wales"

Base:

1 cup flour
1/4 cup soft light brown sugar
1/2 cup (4 oz) butter (room temperature)


Nut and Coconut Topping
2 eggs, beaten
1 cup soft dark brown sugar
2 Tb flour
1 cup chopped walnuts
1/4 cup unsweetened coconut
1/2 tsp salt
1 tsp baking powder


Directions:
Preheat the oven to 350 degrees. To make the base, mix the the flour, light brown sugar and soft butter in an electric mixer, and pat evenly into a Pyrex dish lined with parchment paper (measuring 12" x 6" or 9" x 9"). Bake for about 10 minutes then allow to cool.


Meanwhile, in a large bowl mix together the sugar, flour, nuts, coconut, salt and baking powder and set aside. In a medium bowl mix the eggs with an electric beater until light. Then gently fold the eggs into the nut and coconut mixture with a spatula, and pour onto the base.
Bake for about 25 to 30 minutes. When the cake has cooled slightly lift it out of the baking dish and allow to cool completely. Before serving, cut the cake into small 1 1/2" squares and lightly dust with confectioner's sugar.