For the cake:300g self raising flour
1 1/2 teaspoon baking powder
75g softened butter
100g fresh or frozen raspberries, blackberries and strawberries
zest of 1 lemon
2 eggs lightly beaten
100ml yogurt100ml milk
- Mix all the ingredients together adding the berries last.
- Bake at 150C for 50 minutes until golden brown and cooked.
Use the smoothie in place of water when making up the icing.
Either use a couple of tablespoons of ready made smoothie or make your own with a handful or berries and some apple juice. Whisk up in a blender and then strain through a seive.