http://www.kingarthurflour.com/recipes/inside-out-pumpkin-muffins-recipe
This is the original. I made some adjustments for 24 muffins and using some whole wheat pastry flour

ready in about 40 minutes; serves 24
You might need to buy:
  • vegetable oil
  • large eggs
  • MUFFINS
  • granulated sugar
  • pumpkin seeds
  • FILLING
  • TOPPING
  • King Arthur Unbleached All-Purpose Flour or King Arthur White Whole Wheat Flour
  • pumpkin pie spice; or 2 teaspoon ground cinnamon + 1/2 teaspoon ground cloves + 1/2 teaspoon ground ginger
You might need to buy:
  • all Bran or Bran Buds cereal
You might need to buy:
  • Pumpkin Streusel:
  • all-spice
  • mincemeat
  • Spicy Mincemeat:
  • chopped pecans
  • whole-berry cranberry sauce
  • Cranberry:
  • warmed honey
  • thin slices apple per muffin
  • chopped apple
  • Apple almond:
  • melted semi-sweet chocolate chips
  • Chocolate cinnamon:
  • Variations:
  • buttermilk
  • solid-pack pumpkin
  • pumpkin-pie spice
  • cold butter
  • chopped pecans
  • Cranberry Upside Downs:
  • whole-berry cranberry sauce
  • chopped pecans
  • pecan half per muffin
You might need to buy:
  • Post Original Shredded Wheat Spoon size cereal
  • fat-free milk
  • firm packed brown sugar
You might need to buy:
  • extra raisin Raisin Bran cereal
You might need to buy:
  • buttermilk
  • honey OR molasses
  • ground cardamom
  • bran cereal
  • unbleached white flour
  • whole-wheat flour
  • cinnamon sugar
You might need to buy:
  • mashed ripe bananas
  • chopped pecans
  • Topping:
  • ground cinnamons
  • sweetened flaked coconut
  • chopped pecans