Preheat oven to 350°F. Spray two 9x5-inch loaf pans with baking spray and line each prepared pan with parchment paper.
In a medium bowl, whisk together flour, baking powder, baking soda, salt, cinnamon, nutmeg, and cloves. Set aside.
3 cups all-purpose flour, 1 ½ teaspoons baking powder, 1 teaspoon baking soda, 1 teaspoon kosher salt, 1 teaspoon ground cinnamon, 1 teaspoon ground nutmeg, 1 teaspoon ground cloves
In a large mixing bowl, beat sugars, eggs, oil, and vanilla on medium speed until combined. Mix in pumpkin puree and mashed banana.
¾ cup granulated sugar, ⅔ cup light brown sugar, 3 large eggs, ¾ cup vegetable oil, 2 teaspoons pure vanilla extract, 1 15-ounce can pumpkin puree (not pumpkin pie filling), 1½ cups mashed banana
Add flour mixture to wet ingredients. Stir with a rubber spatula until just combined. Do not overmix.
Pour batter into prepared loaf pans. Bake for 45–55 minutes, or until a toothpick inserted in the center comes out clean.
Cool loaves in pans for 10 minutes, then transfer to a wire rack. Slice and serve.