1.Wash and squash the strawberries roughly and keep it aside.
2.Sift baking powder and flour and keep it aside.
3.In a bowl mix oil,sugar and eggs with vanilla essence and beat nicely.
4.Now add yoghurt and mix throughly with wooden spatula or hand mixer.
5.Add flour part by part and mix gently with wooden spatula or hand mixer.
6.Now add squashed berries and mix gently into the mixture.
7.Transfer the mixture to greased and dusted square cake tin and bake in a
preheated oven at 180'c for 30-35 minutes.Take out and cool and cut into square's.
Note:To check whether the cake is done,insert tooth pic or knife into cake, if the knife comes out clean then the cake is done if not bake for another 5-10minutes.
You can use the same batter to make muffins,instead of cake tin use muffin tin,line the muffin case and pour the batter into each case and bake as normal but time may vary so first keep it for 10minutes then you can increase further 5-10 minutes until muffins are done.