Preheat the oven to 350 degrees.
In a medium bowl, stir together the peanut butter, banana, honey & brown sugar. Add in the oats, salt, baking soda, baking powder & vanilla. Stir well
In a separate small bowl, lightly beat the egg & then add to the peanut butter oat mixture. Continue stirring until completely combined.
Scoop the oat mixture out by tablespoon size balls & place on a cookie sheet. Bake the cookies for 6-8 minutes or until the bottoms & tops of the cookies just barely starts to brown – the cookies will still be soft & won’t look quite like they should be done
Remove the cookie sheet & allow to cool completely. Store in an airtight container in the fridge.