Preheat oven to 350 degrees F.
Grease 9x13" pan with cooking spray.
In a large bowl, whisk together bananas, maple syrup, oil, yogurt, and egg until well combined.
Add oats, flour, baking soda, cinnamon, and salt, and stir until combined.
Fold in zucchini and blueberries.
Pour into prepared pan.
Bake 38-40 minutes, until golden brown and toothpick comes out of the center clean.
Cool, serve, and enjoy!