My Grandmother's Easy Moist Banana Bread

Ingredients

• 3 medium ripe bananas (about 1 ½ cups, mashed)
• 1/3 cup unsalted butter, melted
• 1 large egg
• 1 teaspoon vanilla extract
• ¾ cup granulated sugar
• 1 teaspoon baking soda
• Pinch of salt
• 1 teaspoon ground cinnamon
• 1 ½ cups all-purpose flour
• ½ cup chopped walnuts or pecans (optional)
• ½ cup chocolate chips (optional)