Add other leftover festive ingredients such as nuts or dried fruits. They can be cut into mini squares for nibbles or for dinner parties, top with ice cream and berries.
[cooked-sharing]

Preheat the oven to 180°C (350°F) mark 4.
Melt the butter and chocolate in a heavy pan over a low heat, stirring frequently until melted and smooth. Remove from heat.
Beat the sugar, with the eggs and cranberry sauce in a bowl and pour in the chocolate mixture with the vanilla extract, flour and salt.
Pour into a 21cm square tin and bake for 15-20 minutes. If you put in a toothpick it should come out wet.
Ingredients
Directions
Preheat the oven to 180°C (350°F) mark 4.
Melt the butter and chocolate in a heavy pan over a low heat, stirring frequently until melted and smooth. Remove from heat.
Beat the sugar, with the eggs and cranberry sauce in a bowl and pour in the chocolate mixture with the vanilla extract, flour and salt.
Pour into a 21cm square tin and bake for 15-20 minutes. If you put in a toothpick it should come out wet.