In a large bowl, combine flour, sugar, brown sugar, pumpkin pie spice, cinnamon, ginger, clove, baking soda, and salt, stirring until blended.
In a medium bowl, combine eggs, pumpkin, oil, and apples, stirring until blended.
Add the wet ingredients to the dry ingredients, and stir until just combined.
Fold in walnuts.
Line 24 regular-sized muffin cups with paper liners.
Fill 3/4-full with batter.