Take this list with you to any of our 8 supermarkets:
Preheat oven to 175 °C.
In a bowl, sift the flour and mix in the sugar, baking soda and baking powder.
In a separate bowl, combine the yogurt, egg, vanilla, butter and blueberries.
Then stir the dry & wet mixtures together until combined.
Scoop the (very thick) batter into oiled muffin tins.
Bake for about 25 minutes until golden brown.