Pre-heat oven to 350°F/180°C. Prepare a nonstick loaf pan with butter or nonstick cooking spray. Gather your ingredinets together.
In a small bowl, whisk together the dry ingredients (gluten-free flour, baking powder, baking soda, pumpkin spice, cinnamon, and salt. Set aside.
In a large mixing bowl, beat the oil and coconut sugar until well mixed. Add the eggs, pumpkin puree, bananas, and vanilla, beating until combined.
Add the flour mixture and mix just until blended. Stir in half of the nuts. Pour batter into the loaf pan and spread evenly.
Top the batter with remaining nuts in the loaf pan. Bake for 50 to 60 minutes or until a toothpick inserted in the center comes out clean.
Cool the banana bread in the bread pan for 5 minutes before removing and placing on a wire rack to cool completely.