Sweet Monkey

1. Combine flour, sugar, baking powder and salt in a small bowl. 
2. Mash banana. Combine milk, oil and vanilla extract in a small bowl.
3. Mix together dry and wet ingredients. 
4. Fold in most of your blueberries, saving a few for the top. 
5. Using an ice-cream scooper fill one greased muffin cup. Will fill a regular size muffin cup to the top. 
6. Bake in oven for 20 minutes. Take out of oven spread butter and enjoy!