Nigella's Store Cupboard Chocolate Orange Cake

I really shouldn't be making cakes at the moment, certainly not two in one week, and a pavlova come to think of it.  However if you're making them to share and not just to eat yourself that's fine. It's ages since I have made this cake, it's one I used to do quite regularly. The good thing about it is there is no skill required for it. Simply melt the butter and chocolate and stir the other ingredients into it. No careful folding or whisking needed. It's wonderfully chocolaty with a good orange flavour. The marmalade keeps it moist and the edges are almost chewy. The recipe is from Nigella Lawson's, 'How to be a Domestic Goddess'. Its definitely one to try if you are not a confident cake maker. 

Ingredients
125 g butter
100 g good quality dark chocolate, broken into pieces
300 g orange marmalade
150 g castor sugar
2 eggs, beaten
150g SR flour
a pinch of salt

Method
Preheat the oven to 180ºC
Place the butter in a largish heavy-bottomed saucepan and melt over low heat. When it has nearly all melted, add the chocolate pieces, give them a stir and allow them to sit for a minute. Take off the heat, and stir with a wooden spoon until the chocolate melts and the chocolate-butter mixture is completely smooth and without lumps.
Next, add the marmalade, sugar, salt and beaten eggs, and stir till everything is combined well.
Beat in the flour little by little until everything well mixed.
Pour into a greased 9-inch baking tin and bake at 180ºC for 50 minutes to an hour or until a skewer inserted comes out clean.