Preheat oven to 350 degrees F. Line and grease a 9 in x 5 in loaf tin. I line mine with parchment paper and grease it with an olive oil spray. Put the oven rack in the middle of the oven.
In one bowl, mix 1/3 cup olive oil, 2 eggs, 1 cup mashed bananas, 1/2 cup maple syrup, and 1 teaspoon of vanilla together.
In another large bowl, add 1 3/4 cups flour, 1 teaspoon baking soda, 1/2 teaspoon salt, and 1 teaspoon of ground cinnamon and mix it all together with a fork.
Pour the bowl of dry ingredients into the bowl of wet ingredients and mix until banana bread batter forms.
Pour the banana bread batter into the lined loaf tin. Bake for 45-55 minutes.
Remove the banana bread from the oven then let it cool for 10 minutes in the tin. Remove it from the loaf tin and let it cool on a wire rack.
While the banana bread cools, make the maple glaze. In a small bowl, mix 1/4 cup powdered sugar, 3 Tablespoons maple syrup, 1 teaspoon olive oil, 1 teaspoon vanilla, and a pinch salt. Mix until the glaze is smooth.
Once the banana bread is cooled, pour the glaze on top.