Preheat the oven to 400 and line a muffin tin with liners.
With an electric or stand mixer, beat butter, sugar, applesauce and vanilla until it is fluffy.
In a separate bowl, combine both flours, salt, oats, baking soda and pumpkin pie spice.
Add about 1/3 of the flour mixture and the water to the butter mixture and mix.
Add another 1/3 of the flour mixture and the milk to the butter mixture and mix again.
Pour in the last of the flour mixture and mix until moistened.
Fold in the raisins and nuts, if you are using nuts.
Spoon the batter into the muffin liners about 2/3 full.
Bake for 15 to 20 minutes or until a toothpick inserted in the center comes out clean.
Remove muffins from tin, let cool and serve.