Preheat your oven to 350°F (175°C). Grease a 9x5-inch loaf pan or line it with parchment paper.

In a mixing bowl, mash the bananas until smooth. Add eggs, sugar, oil, and vanilla extract. Whisk until combined.

In another bowl, whisk together flour, baking soda, salt, and cinnamon (if using).

Gradually fold the dry ingredients into the wet mixture, stirring just until combined. Avoid overmixing.

Stir in chocolate chips or nuts, if desired.

Pour the batter into the prepared loaf pan and smooth the top.

Bake for 50-60 minutes or until a toothpick inserted into the center comes out clean.

Let the bread cool in the pan for 10 minutes, then transfer it to a cooling rack. Slice and enjoy!