Preheat the oven to 350°F and line a baking tray with parchment paper. Set aside.
In a large bowl, whisk the oil, brown sugar, and mashed banana until well combined.
1 ripe banana, 1/2 cup butter, 2/3 cups dark brown sugar
Add in egg and vanilla and continue whisking.
1 egg, 1 tbsp vanilla
Add the flour, salt, baking powder, and baking soda. Fold until no flour streaks appear.
1/2 tsp baking soda, 1 1/4 cups all-purpose flour, 1/2 tsp salt, 1/2 tsp baking powder
Gently fold in the chocolate chips. Don't over mix!
1/2 cup semi-sweet chocolate chips
Scoop 6 cookies at a time on your baking tray, I find an ice cream scoop works best for this.
Bake for 12-14 minutes or until the edges look crisp yet the middle is still slightly puffy. Remove from the oven and keep on the pan for a few more minutes before placing them on the cooling rack. Enjoy!