Start out by preheating your oven to 350°F.
In a medium sized bowl, add flour, baking soda, baking powder, salt and cinnamon. Mix and set aside.
In a large bowl, add peeled bananas and mash until smooth then add both sugars, oil, vanilla and egg whites. Mix until combined.
Next, add dry ingredients carefully to wet ingredients and fold in until smooth and combined (folding adds in air to make bread less dense).
Pour into a lightly grease 8x5 bread pan evenly.
Let bread cool 10-15 minutes before cutting and serving.
Can stay good for up to 4-5 days in an airtight container.
Optional: top with brown sugar for a crunchy top.
Toothpick should come out slightly moist when done baking, if completely dry it's over cooked