01 - Preheat oven to 350°F. Grease a 9x5-inch loaf pan or line with parchment paper.
02 - In a large mixing bowl, mash bananas until smooth. Blend in melted butter, eggs, and vanilla extract until incorporated.
03 - In a separate bowl, whisk together all-purpose flour, granulated sugar, baking soda, and salt until evenly combined.
04 - Add the dry ingredients to the banana mixture, stirring gently just until the batter forms.
05 - Gently fold in diced strawberries and, if desired, chopped nuts. Avoid overmixing to maintain a tender crumb.
06 - Pour batter evenly into the prepared loaf pan.
07 - Place the pan in the oven and bake for 50 to 55 minutes or until a toothpick inserted into the center comes out clean.
08 - Allow bread to cool in the pan for 10 minutes, then transfer to a wire rack to cool completely before slicing.