Preheat the oven to 350°F. Line a loaf pan with parchment paper.
In a large bowl, whisk together flour, arrowroot starch, baking powder, cinnamon, nutmeg, clove, and salt.
In another bowl, whisk together egg, maple syrup, and pumpkin puree. Add the wet mixture to the flour mixture and fold in. Add diced apple and fold in. Transfer the batter to the prepared pan.
In a small bowl, toss together all the ingredients for the pecan topping. Sprinkle over the top of the loaf.
Bake at 350°F until a toothpick inserted in the center comes out clean, for 55-65 minutes. Check after 45 minutes and if it's brown on top, cover with aluminum foil to prevent burning. Let cool completely. Slice and enjoy! Keep the leftovers in an air-tight container and place them in a fridge.
Notes
Please note that the nutritional information provided is just an estimate and accuracy is not guaranteed.