Preheat oven to 350°. Grease a loaf pan with cooking spray.
In a large bowl, mash bananas with a fork. Add sugar, oil, eggs, and vanilla. Mix with spoon or hand mixer until well blended.
In a separate bowl, add flour, baking powder, salt, and baking soda. Mix well.
Add dry ingredients to banana mixture, stirring to create batter just until blended. Add semi-sweet chips.
Pour batter into loaf pan, spread evenly. Bake bread for 45 minutes, testing with a toothpick for doneness. Remove bread from oven and sprinkle top with brown sugar.
Gently run a butter knife around interior edges of loaf pan to help release bread. Place loaf pan on its side on a wire rack. Let cool before serving.
