1. Preheat oven to 170°C (340°F) and grease a loaf pan.

2. In a bowl, whisk flour, baking powder, baking soda, and salt.

3. In another bowl, mix sugar, butter, eggs, mashed bananas, milk, and vanilla.

4. Combine wet and dry ingredients; mix until smooth.

5. Pour batter into loaf pan and bake for 50–55 minutes or until a toothpick comes out clean.

6. Cool completely before slicing.