I used to always make my mashed potatoes the day of Thanksgiving. But, with two little ones, a few years back I decided something had to give. So I started searching for a recipe that would be able to be made ahead of time. This is the one I found and it is excellent. This version is from Allrecipes.com
INGREDIENTS:
5 pounds Yukon Gold potatoes, cubed
6 ozs. cream cheese
8 ozs. sour cream
1/2 cup milk
2 tsp. onion salt
ground black pepper to taste
DIRECTIONS:
Preheat the oven to 325 degrees. Place potatoes in a large pot of lightly salted water. Bring to a boil, and cook until tender, about 15 minutes. Drain and mash. In a large bowl, mix the mashed potatoes, cream cheese, sour cream, milk, onion salt, and pepper. Transfer to a large casserole dish. Either bake immediately, or let cool and cook the following day for 1 hour or until heated through.

