- I have used cake flour in the recipe. If you do not have cake flour, you can make some at home using all purpose flour and corn flour. Use 3 tablespoon of corn flour and then top it off with All purpose flour to measure 1 ½ cups together. Sieve this mixture couple of times so that the flours blend together. 
- Add the flax seed powder to the flour and mix to combine. 
- Add about a tablespoon of flour to the blueberries and mix it. This step will ensure that the blueberries do not sink to the bottom of the mould when baking. 
- Preheat the oven to 350 F and grease the muffin tins. If using liners, place them in the tins and lightly spray. 
- In a wide bowl, whisk together the yogurt and the sugar. Now add the baking powder and baking soda to the mixture and whisk. Let this rest for about 2-3 minutes. You will notice that the yogurt mixture will become a little frothy. 
- Now add the vanilla extract, oil and milk and whisk well. 
- Add the flour in 3 batches to the wet ingredients and mix gently after each addition. Check for the consistency and if it appears too dry add a tablespoon or so of milk to bring it to pouring consistency. 
- Add the blueberries to the batter and mix gently to combine. 
- Scoop the batter and fill about ¾th of the muffin tin. Bake for 18 – 20 minutes or until the toothpick inserted in the middle comes out clean. 
- Cool the muffins on wire rack and enjoy with a glass of milk.