Preheat your oven to 350 degrees. Mash the bananas in a largebowl and combine with peanut butter, liquified oil, maple syrup, and vanilla. In a separate bowl mix the dry ingredients and then add to the banana mixture and mix well. Add in the chocolate chips and anything else you want to add in and stir just till everything is evenly dispersed.
Line a baking sheet with parchment paper and drop cookies by spoonfuls 1" apart. Bake for 12-14 minutes just till set. I baked mine till the edges of the oats on top turned golden.
Make sure they're completely cool before putting them in an airtight container. I'd even recommend leaving them on the counter for a couple hours because the bananas in them will make them soft if they're covered too soon.