In a sauce pan stir together Sugar, Butter, Canned Pumpkin, Corn Syrup, Pumpkin Pie Spice and White Chocolate Chips together. Stir constantly until it comes to a boil. Keep stirring for about 10 minutes.
Remove sauce pan and stir in the remaining ingredients (Marshmallow Creme. Pecans, and Pure Vanilla Extract.) Pour into a greased and tin foil lined 9 Inch pan. Let stand until completely cool (2 Hours or so). Enjoy this amazing fudge! :)