Preheat your oven to 350°F (175°C) to ensure even baking.
Grease your loaf pan lightly with oil or line it with parchment paper to prevent sticking.
In a large mixing bowl, whisk together the graham cracker crumbs, whole wheat flour, baking soda, salt, and cinnamon until well combined.
In another bowl, beat the eggs lightly. Add in the brown sugar, coconut milk, canola oil, mashed bananas, and vanilla extract. Mix until everything is well blended.
Pour the wet ingredients into the bowl with the dry ingredients. Stir gently until just combined. Be careful not to overmix; a few lumps are perfectly fine!
Transfer the batter into your prepared loaf pan. Smooth the top with a spatula for an even bake.
Place the loaf pan in the preheated oven and bake for about 50-60 minutes, or until a toothpick inserted into the center comes out clean.
Once baked, remove the banana bread from the oven and let it cool in the pan for about 10 minutes. Then, carefully transfer it to a cooling rack to cool completely.