Chocolate Guinness Cake

INGREDIENTS For the sponge: Butter - 300g plus extra for greasing Guinness beer - 150ml Plain flour - 250g Baking soda - 2 tsp Cocoa powder - 100g Caster sugar - 375g Eggs - 3 Vanilla extract - 1 tbsp Sour cream - 150ml For the frosting: Good-quality white chocolate - 200g Butter - 125g Cream cheese(here I used Philadelphia Soft Cream Cheese) - 225g Icing sugar, sifted - 200g METHOD Preheat the oven to 180°C/350°F/ Gas Mark 4, grease a two 22cm/8-inch cake tin with a disc of parchment paper. Melt the butter in a saucepan and then whisk in the cocoa powder and Guinness. In a large mixing bowl combine the flour, baking soda, and sugar. Pour the melted butter mixture along with the eggs, sour cream and vanilla extract. Pour into the prepared cake tin and place in the oven for 35mins or until a skewer inserted comes out completely clean. When the cake is baking, make the cream cheese frosting. To make the frosting, melt the chocolate in a bowl placed on top of a saucepan filled with a little water boiling over low heat. Remove from the heat to cool for about 10 minutes. Place the butter and cream cheese in a bowl and beat until fluffy and combined. Mix through the melted white chocolate and then gradually sift and beat in the icing sugar until you have a smooth, spreadable mixture. To assemble the cake, place it on a cake stand and spread with frosting. Enjoy!!