Preheat oven to 350°
Lightly grease 9x14 inch baking dish with coconut oil.
Stir pulp and baking soda together in a small bowl, set aside.
In another bowl, stir together egg, maple syrup, applesauce, and raisins.
Add flour, cinnamon, nutmeg, and salt to the egg mixtre, then combine with the pulp.
Fold in walnuts, then spread the batter into the greased baking dish.
Bake for 20 minutes.