In the bowl of a stand mixer (or using a large bowl and hand-held mixer), cream together butter and sugar until light and fluffy. Add eggs, one at a time, and mix until combined. Beat in vanilla extract. Mash ripe bananas and add to mixture, mixing until combined.
In a medium bowl, combine flour, baking soda, baking powder, and salt. Stir until combined. Slowly add dry ingredients to banana mixture until just combined. Don’t over-mix.
Toss blueberries in a coating of flour and stir gently into the batter.
Pour batter into prepared loaf pan (sprayed with nonstick cooking spray or lined with parchment paper). Bake for 55-60 minutes or until a toothpick inserted comes out clean. Ovens vary so watch carefully. You might have to add an additional 5-10 minutes of baking time if needed.
Allow to cool completely on a wire rack and enjoy!
Use more or less blueberries to your taste. This Blueberry Banana Bread is a family favorite, it's easy to make and so delicious!