Preheat the Oven & Prepare the Pan
Preheat your oven to 350°F (175°C). Grease a 9x5-inch loaf pan or line it with parchment paper for easy removal. Mash the Bananas and Prepare the Peaches
Mash the bananas in a large mixing bowl until smooth. Dice the peaches into small pieces (drain and pat dry if using canned or frozen peaches). Mix the Wet Ingredients
To the mashed bananas, add the melted butter (or oil), sugar, eggs, and vanilla extract. Stir until fully combined. Combine Dry Ingredients
In a separate bowl, whisk together the flour, baking soda, salt, and cinnamon (if using).
Combine Wet and Dry Ingredients
Gradually add the dry ingredients to the wet mixture, folding them together gently until just combined. Be careful not to overmix.
Fold in the Peaches and Optional Add-Ins
Gently fold in the diced peaches and any optional add-ins, such as chopped nuts or chocolate chips.
Bake
Pour the batter into the prepared loaf pan and spread it evenly. Bake for 50-60 minutes, or until a toothpick inserted into the center comes out clean. Cool and Serve
Let the bread cool in the pan for 10 minutes, then transfer it to a wire rack to cool completely before slicing.