- Preheat your oven to 350°F (175°C).
- Melt the butter and let it cool slightly.
- Peel and place the bananas in a large mixing bowl.
- Use a mixer on low speed to mash the bananas until smooth.
- Add the melted butter and sugar to the mashed bananas. Mix for a couple of minutes.
- Add the beaten eggs and vanilla extract. Continue to mix until well combined.
- Add the baking soda and mix well.
- Gradually add the flour, 1/4 to 1/3 cup at a time. Allow each addition to mix into the batter before adding more.
- If needed, pause the mixer and scrape the sides of the bowl to ensure all the flour is incorporated.
- After all the flour has been added, increase the mixer speed to medium and mix for a few minutes until the batter is smooth and slightly airy.
- Fold in any desired add-ins.
- For Loaf: Grease a loaf pan with butter or cooking spray.
- For Muffins: Grease a muffin tin with butter or cooking spray (skip paper cups for best results).
- Loaf: Pour the batter into the greased loaf pan. Bake in the preheated oven for 40-60 minutes, or until a toothpick inserted into the center comes out clean.
- Muffins: Scoop batter directly into the greased muffin tin. Bake for 25-30 minutes, or until a toothpick inserted into the center comes out clean.
Allow the banana bread to cool in the pan for about 10 minutes, then transfer to a wire rack to cool completely.