- 2/3 cup milk
- 1/4 teaspoon vinegar
- 1 cup white sugar
- 10 tablespoons vegetable oil
- 1/2 cup brown sugar
- 1/4 cup butter, melted
- 1 1/4 teaspoons baking soda
- 1 1/4 teaspoons baking powder
- 1/2 cup oats
- 2 cups all-purpose flour
- 1 cup mashed bananas
- Preheat oven to 350 degrees F (175 degrees C). Lightly grease a 9×13-inch baking dish.
- Mix milk and vinegar together in a bowl.
- Stir white sugar, vegetable oil, milk mixture, brown sugar, and butter together in a bowl; add baking soda and baking powder and stir. Mix oats into sugar mixture. Stir flour, 1 cup at a time, into sugar-oat mixture until batter is evenly combined; fold in bananas. Pour batter into the prepared baking dish.
- Bake in the preheated oven until golden brown and a toothpick inserted in the center comes out clean, about 45 minutes.