Pre-Cooking Prep
Preheat oven to 350°F (175°C).
Grease a 9×5-inch loaf pan or line with parchment paper.
Mash bananas until mostly smooth.
Make the Batter
In a large bowl, whisk mashed bananas, brown sugar, oil, plant-based milk, vinegar, and vanilla until smooth.
In a separate bowl, whisk flour, baking soda, cinnamon, and salt.
Add dry ingredients to wet ingredients and mix just until combined.
Fold in nuts or chocolate chips if using.
Bake
Pour batter into prepared loaf pan and smooth the top.
Bake for 50–60 minutes, until a toothpick inserted in the center comes out clean or with moist crumbs.
Cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.
Doneness & Texture Check
Top lightly golden and set
Center firm, not wet or gummy
Toothpick shows crumbs, not raw batter