01 - Preheat oven to 350°F (175°C). Grease a 9x5-inch loaf pan or line with parchment paper.
02 - In a large mixing bowl, mash bananas until smooth. Add melted butter, eggs, and vanilla extract, mixing well.
03 - In a separate bowl, whisk together all-purpose flour, granulated sugar, baking soda, and salt.
04 - Gently add dry mixture into wet ingredients, stirring only until combined.
05 - Carefully fold in diced strawberries and nuts if using, avoiding overmixing.
06 - Pour batter into prepared loaf pan and redistribute evenly.
07 - Bake for 50 to 55 minutes, or until a toothpick inserted in the center of the loaf comes out clean.
08 - Allow loaf to cool in the pan for 10 minutes before transferring to a wire rack to fully cool before slicing.