Preheat oven to 350°. Line an 8x8 baking pan with parchment paper (leave an overhang for easy removal) and set aside.
In a large bowl, combine oats, pecans, pumpkin pie spice, and salt. Set aside.
In another bowl, whisk together the pumpkin puree, mashed banana, maple syrup, and vanilla extract. Pour the wet ingredients into the dry ingredients and mix until combined. Mix in the chocolate chips.
Pour the mixture into the pan. Pack down and spread out evenly in the bottom. Bake for 20 minutes and then let cool completely before cutting. I cut mine into 12 bars, but you can make them bigger or smaller!
Notes
make sure to line your pan with parchment paper for easy removal.