In a large bowl, add the butter, granulated sugar, vanilla extract and grab your whisk and mix it all together until it is light and fluffy.
You can now add the eggs and make sure to mix very well.
After that has been thoroughly mixed, add in the cup of mashed bananas and mix it again very well. Set the bowl aside.
In another bowl, combine all the dry ingredients: baking powder, salt, baking soda, cinnamon, and all-purpose flour and mix very well. After mixing, pour it onto the wet ingredients and mix until everything is well-combined.
Chill them for at them 30 minutes - the longer the better.
Scoop the banana bread cookies dough.
Place the dough on the mat.
Bake at 400°F for eight to ten minutes. Cool before serving.