Preheat oven to 350 degrees.

In a mixing bowl, combine flour, baking soda, baking powder, cinnamon and salt.

In a separate large bowl, add bananas and mash until mostly smooth. Mix in brown and white sugars. Mix in egg, melted butter, milk and vanilla extract.

Dump flour into wet ingredients and stir until just combined.

Line a standard size muffin pan with muffin liners or lightly butter/oil the tin.

Evenly distribute muffin batter between the twelve tins. Transfer to the oven and bake for 22-24 minutes.

When done, muffin tops will be lightly golden and a toothpick should run through the muffins and come out clean.

Transfer muffins to a cooling rack to let cool. Enjoy warm!