Preheat your oven to 350°F (175°C). This ensures that your banana bread bakes evenly.
Grease your loaf pan with butter or use parchment paper for easy removal.
In a medium bowl, whisk together the all-purpose flour, baking soda, baking powder, and salt. Set aside.
In a large mixing bowl, beat the softened butter and sugar together using a whisk or electric mixer until light and fluffy.
Add the eggs one at a time, mixing well after each addition to ensure they are fully incorporated.
Stir in the mashed bananas, fresh lemon juice, and vanilla extract until well combined.
Gradually add the dry ingredients to the wet mixture, folding gently with a spatula until just combined. Be careful not to overmix, as this can result in a dense loaf.
Pour the batter into your prepared loaf pan, smoothing the top with a spatula.
Bake in the preheated oven for 60-65 minutes, or until a toothpick inserted into the center comes out clean.
Once baked, remove the banana bread from the oven and let it cool in the pan for about 10 minutes, then transfer it to a cooling rack to cool completely. Slice and serve warm, or store it for later!