Chocolate crackle cookies.

When my mum moved recently, she gave me some of her cooking books. After flipping through one of them, I found a recipe for some biscuits that I'd been trying to find a recipe for for ages. Success!
The recipe specified nuts, but I didn't have any, so told myself that they'd be fine without them. They were, but I think they would have been better with them. Anyway, use what you have!
I halved the recipe because I hate having lots of biscuits in the house (I'm too tempted to eat them, and seriously, I'm worried about my waistline), but I'll give you the full recipe and you can decide for yourself.

Recipe:
From "Sweet Food"

Oven 180C
Makes about 60

125g butter, cubed
2 cups dark brown sugar
1 tsp vanilla essence
2 eggs
60g dark chocolate, melted
1/3 cup milk
2 3/4 cup plain flour
2 tbsp cocoa powder
2 tsp baking powder
1/4 tsp cinnamon
2/3 cup chopped nuts (i.e pecans), optional
icing sugar to coat

Cream butter, sugar and vanilla.
Add the eggs, mix.
Stir in the chocolate and milk.
Add dry ingredients, except nuts, and mix.
Add the nuts (if using).
Refrigerate for at least 3 hours.
Roll tablespoons of the mixture into balls. Coat each ball in icing sugar. Don't flatten the balls! They do this by themselves in the oven, they're very clever.
Place apart on the tray and bake for 20-25 mins. They'll be brown on the bottom.