Heat oven to 350 degrees F. Spray a 15×10.5" pan with non-stick spray and set aside.
Peel bananas and mash well. Stir in brown sugar, oil, milk and eggs until combined. Add in dry ingredients and stir. Fold in ½ the chocolate chips.
Spread the batter into the prepared pan and sprinkle remaining chips on top.
Bake 18-22 minutes, until a wooden toothpick inserted in center comes out clean. Cool completely and cut into squares. Enjoy!
