Step 1
Preheat oven to 160 °C. Grease and line a 20cm round cake tin.
Step 2
Place butter, flour, sugar, eggs, baking powder and vanilla extract into a bowl and beat with a hand mixer for a few minutes until the mixture looks light and fluffy.
Step 3
Add the vanilla quark and lime zest and beat the mixture for another 30 seconds. Stir through two handfuls of blueberries.
Step 4
Pour the mixture into the cake tin and bake for 40 – 50 minutes.
Step 5
To make the icing beat the cream cheese and icing sugar together until smooth. Add the lime zest and juice and stir through.
Step 6
Once the cake has cooled spread the icing on top and sprinkle with the remaining blueberries.
Enjoy!