Preheat oven to 350 degrees. Coat loaf pan with cooking spray.
Mix flours, baking soda, nutmeg, salt, and cinnamon in a small bowl; set aside.
Whisk together sugars and egg in a separate bowl. Add pumpkin and oil, blend well. Gradually add the dry ingredients into the wet ingredients; stir just until combined. Fold in cranberries.
Pour into loaf pan. Bake for 45-50 minutes, or until knife comes out clean.