**Preheat the oven**
Preheat your oven to 350°F (175°C). Grease and line a 9x5-inch loaf pan with parchment paper, leaving some overhang for easy removal.
**Mix wet ingredients**
In a large mixing bowl, whisk together mashed bananas, pumpkin puree, eggs, oil, granulated sugar, brown sugar, and vanilla extract until smooth and well combined.
**Combine dry ingredients**
In a separate bowl, whisk together flour, baking soda, baking powder, salt, cinnamon, nutmeg, and cloves.
**Form the batter**
Gradually add the dry ingredients to the wet ingredients, stirring gently until just combined. Be careful not to overmix. If using, fold in walnuts or pecans and/or chocolate chips.
**Bake**
Pour the batter into the prepared loaf pan and smooth the top with a spatula. Bake for 55–65 minutes, or until a toothpick inserted into the center comes out clean or with a few moist crumbs.
**Cool**
Let the bread cool in the pan for 10–15 minutes, then use the parchment paper to lift it out onto a wire rack. Cool completely before slicing.