Sieve flour in a big bowl.

Wash and wipe the blueberries and dust(sprinkle) them with 1 tbsp of flour.

In a separate bowl add yogurt, castor sugar and mix well.

Now add baking soda and baking powder in the yogurt and mix.

Let the yogurt mixture rest for 3-4 minutes or till it froth.

Now add oil ,vanilla essence and lemon zest in the yogurt mixture and mix gently .

Now add the sieved flour in the yogurt mix .(keep adding 1 tbsp flour at a time and keep mixing)

Now add the blue berries in the flour mix and stir gently.

Fill the prepared mixture in muffin cups till 3/4 level(don’t fill it till the top ,as it need some space to rise while baking)

Bake in a preheated oven at 170 c for 35 minutes or till a tooth pick inserted come out clean.

Let it rest for 5 minutes in the oven.

Remove from the muffin cups and serve.