From America's Test Kitchen cookbook titled The Best Make-Ahead Recipe. This is what mashed potatoes are supposed to taste like. Roasting the pototoes instead of boiling adds to the rich potato flavor and folding in the cream and butter at the end prevents them from becoming gluey. The mashed potatoes can be made up to 2 days in advance and I love that they heat in the microwave instead of the oven for serving . . . also I love that I didn't have to peel, cube, and boil a single potato! Great for when your oven is tied up with other dishes. I made this for Easter dinner and it fed 8 adults and 2 children and the bowl was scraped clean.