Make Ahead Mashed Potatoes For Thanksgiving. Add 2 tablespoons butter cream cheese sour cream milk and 34 teaspoon salt. Mashed potatoes can be made almost completely ahead.
Stir in milk and salt - up to two days ahead. Cover the dish tightly with plastic wrap and refrigerate overnight or up to 2 days ahead. Mix until all ingredients are blended.
Cover the dish tightly with plastic wrap and refrigerate overnight or up to 2 days ahead.
Scrape the potatoes into the prepared dish and smooth the top. Mix until all ingredients are blended. Dot the top with the bits of chilled butter. Mashed potatoes can be made almost completely ahead.