Preheat oven to 400 and prepare a 12 hole muffin pan by spraying with cooking spray.
In a large bowl, mix together the flour, sugar, nuts, oats, cinnamon, and nutmeg.
In a separate bowl, beat the eggs and add the apples, oil and water. Pour the egg the mixture all at once into the flour mixture. Stir just until the flour is moistened. Spoon the batter into muffin cups and bake for 20 minutes, or until slightly browned.