Blueberry muffins

115 g butter
1 c sugar
2 eggs
1 c yoghurt
1/2 c milk
1/2 tsp vanilla essence
2 c flour
1 1/2 tsp baking powder
3/4 c blueberries

Beat butter and sugar in a bowl until pale and fluffy. Beat in eggs, yoghurt, milk and vanilla essence.
Add to this sifted flour and baking powder then mix. Lastly gently fold in blueberries. Place in muffin tins. Bake 180°C 20 mins, or top bounces back when pressed.

Frozen blueberries can be used, just roll in some of the flour prior to adding to the mix so they hold longer while folding in.