Ultimate no flour sweet potato cake

The  fantastic thing about this cake is that there is no flour and it is made up entirely of a vegetable and eggs and still ends up tasting like a great cheesecake. So go ahead and indulge guilt-free girls.

Ingredients:
650 gm Sweet potatoes, cut into small pieces
1 tbsp butter
125 gm demerara (brown sugar)
3 free-range eggs
3 tbsp skimmed milk
Zest of 1 lemon
juice of the same lemon
1 tbsp sultanas
2 tsp baking powder

Cook the sweet potatoes in boiling water for about 12 minutes. Or until they are tender.Drain and mash until smooth.Transfer the sweet potatoes to a bowl while they are still hot and add the butter and the sugar. Mix till both are dissolved. Beat the eggs with a whisk and add it to the sweet potato mixture. Add the lemon juice and zest.Mix well. Then add the sultanas and baking powder and mix well. Pour the mixture into a cake tin lined with baking parchment.

Cook in a pre-heated over at 160c for about 45 minutes. Or until a knife comes out clean when you dip it into the center of the cake. Cool it on a wire rack. Cut it into slices to serve.