Preheat the oven to 350 degrees Fahrenheit. Grease a standard loaf pan and line it with parchment paper.
In a medium bowl whisk together all-purpose flour, baking powder, baking soda, cinnamon, salt and pumpkin pie spice. Set aside.
In a second bowl combine all wet ingredients: pumpkin puree, maple syrup, egg, egg white and oil. Stir together until smooth.
Add wet ingredients into dry and mix until just combined.
Transfer the batter into the prepared loaf pan.
Place in the preheated oven and bake for 45 minutes or until a toothpick inserted in the middle comes out clean. Cool in the pan for 15 minutes, then take out of the pan and cool completely on a wire rack.
While the bread is baking, prepare the frosting. In a medium bowl combine softened cream cheese, Greek yogurt, maple syrup and vanilla. Beat with an electric hand mixer until smooth all lumps are gone. Place in the fridge until ready to use.
Once the bread is at room temperature, place all frosting on top and spread it around evenly.
Cut into thick slices and serve. Store leftovers covered in the fridge.