01 - Preheat oven to 350°F and grease a 9x5-inch loaf pan or line with parchment paper.
02 - In a large mixing bowl, mash bananas until smooth. Stir in melted butter, eggs, and vanilla extract until fully combined.
03 - In a separate bowl, whisk together the flour, granulated sugar, baking soda, and salt.
04 - Gradually add the dry ingredients to the wet mixture, stirring gently just until blended.
05 - Carefully fold in diced strawberries and nuts if desired, avoiding overmixing.
06 - Pour the batter evenly into the prepared loaf pan.
07 - Bake for 50 to 55 minutes, or until a toothpick inserted into the center comes out clean.
08 - Let bread cool in the pan for 10 minutes, then transfer to a wire rack to cool completely before slicing.