Preheat the oven to 350ºF.
In a large bowl, add dry ingredients (flour, baking powder, baking soda, salt, and a dash of cinnamon). Sift until well combined.
In the bowl of a stand mixer, add the softened butter and sugar and mix on medium-high speed until light and fluffy, about two minutes.
Add in the applesauce, mashed banana, and vanilla extract and mix until well incorporated.
Add the dry ingredients into the wet and mix well. Batter will appear quite wet and still contain some texture due to the banana.
Add in the chocolate chips and mix until well distributed, scraping down the sides of a bowl with a wooden spoon or spatula if needed.
Drop by tablespoonfuls (or use a cookie scoop) onto parchment-lined baking sheets.
Bake for 13-16 minutes. They'll be done when dry to the touch on tops and lightly golden on the bottoms.
Transfer to wire baking racks to cool for a few minutes, then enjoy!