Lightly coat 12 muffin tin liners with coconut oil spray.
In a large bowl, add the corn starch and water and stir till well combined. To the bowl, add the applesauce, sugar, coconut oil or butter and vanilla. Stir till well combined and no clumps.
To the bowl, you can now add the whole wheat flour, baking soda, baking powder, salt and cinnamon. Stir till well combined.
Grate in your apple and add in your walnuts. Gently fold into the mixture till well combined.
Evenly distribute the mixture to all 12 muffin tins. I used 2 tbsp. ice cream scoop to help with keeping them even.
Bake for 5 minutes at 425F and then for 20-25 minutes at for 350F.
Cool for 5 minutes in the muffin pan and remove and cool completely on wire rack. Serve with vegan butter!