Banana Blueberry Muffins No. 1796

• 1 none
• 1 blueberries (frozen)
• 1 egg
• 190 gr all purpose flour
• 150 gr pureed overripe bananas
• 85 gr sweet butter
• 85 gr brown sugar
• 2 gr baking soda
• 2 gr baking powder
• 1 gr salt