Preheat oven to 350 degrees; grease loaf pan and set aside.
In a mixing bowl, combine flour, cinnamon, baking soda, baking powder, salt, and nutmeg.
In a separate bowl, combine Truvia, grated carrots, grated apples, applesauce, and egg. Mix well.
Add dry mixture to apple/carrot mixture; stir just until moistened.
Stir in walnuts, flaxseed, and chia seeds.
Spoon batter into prepared pan.
Bake for 55-60 minutes.
Remove from oven; cool on a wire rack 10 minutes.
Remove loaf from pan; cool completely on wire rack.