1. Preheat oven to 180 degrees c.

2. Melt butter and leave to cool

3. Measure the flour and baking powder in a separate bowl

4. Mix melted butter and sugar,  add the milk and vanilla and whisk the egg in

5. Make a well in the middle of the flour, pour your wet ingredients in, add the blueberries and mix with a spatula

6. Grease your muffin tray, spoon in the batter and bake for 25 minutes

7. Leave to cool and serve