Preheat your oven to 350°F (175°C). This ensures that your banana bread bakes evenly.
Grease your loaf pan with a bit of oil or line it with parchment paper for easy removal after baking.
In a large mixing bowl, whisk together the whole wheat flour, baking powder, baking soda, and salt.
In another bowl, mix together the canola oil, honey, vanilla extract, and egg. Beat until well combined.
Stir in the mashed banana into the wet ingredients until well incorporated.
Pour the wet mixture into the dry ingredients and gently fold with a rubber spatula until just combined.
Transfer the batter into your prepared loaf pan, smoothing the top with the spatula.
Bake in the preheated oven for 50-60 minutes, or until a toothpick inserted into the center comes out clean.
Once baked, let the banana bread cool in the pan for about 10 minutes, then transfer it to a wire rack to cool completely.