Simple blueberry muffin (Starbucks type)

Mix the softened butter with sugar and keep mixing until it turns pale. Add in one egg and mix well.

Add in yoghourt and vanilla and mix well.

Add in the sieved flour ingredients and mix well with wet ingredients.

Cover blueberries with one tablespoon flour.

Combine blueberries with batter. Then equally divide the batter into 4. Bake in 180℃ oven for 20-25 minutes. Enjoy.