Preheat the oven to 350°F and grease a 9x9 inch baking dish.

Place the cubed banana bread into the baking dish.

In a bowl, whisk together the eggs, milk, maple syrup, and vanilla extract.

Pour the egg mixture evenly over the bread cubes. Let it sit for 10 minutes to soak.

Bake for 40 to 45 minutes until the center is set and the top is golden.