Preheat oven to 400 degrees. Wash sweet potatoes. Prick them with a fork all over. Back in the oven until soft, about 45 minutes. You can also microwave sweet potatoes on high until soft. Remove potatoes from oven.
Lower oven temperature to 350 degrees. Let potatoes cool. Then remove skins and add them to a large bowl. Add butter, milk or cream, eggs, brown sugar, pumpkin pie spice and salt to potatoes. Mash the potatoes and other ingredients together until well combined.
Transfer potatoes to a 8 x 8 casserole dish and bake at 350 degrees for 30 – 40 minutes. Then add marshmallows and return to oven for 5 – 10 minutes, or until marshmallows are lightly browned.
Submitted by Natalie Ring - Favorite Thanksgiving Side Dish Recipe Contest Finalist