MAKE-AHEAD MASHED POTATO CASSEROLE 8 servings. On our CTV News at Noon program on December 10, 2007, Leanne referred to these as Log Cabin Potatoes. Since then, I have received many requests for the recipe so here it is. It can be found in my most recent cookbook PamCooks 2: More Favourites from the Trillium Cooking School". It's always part of our Christmas dinner. 8 large potatoes, peeled 4 cloves garlic, peeled Water 4 ounces light cream cheese, softened l/2 cup light sour cream Salt, pepper, onion salt, to taste Milk l. Cook potatoes and garlic cloves in enough water to cover until tender. Drain well. 2. Mash potatoes, garlic, cream cheese and sour cream together until smooth, adding salt, pepper and onion salt to taste, and enough milk to moisten. 3. Spoon into warm serving bowl. Keep warm in 200 degree F oven until serving time. Can be made ahead, wrapped and refrigerated overnight. Remove from refrigerator 1/2 hour before reheating. Reheat in 300 degree F oven for 30 to 45 minutes, or in microwave until hot.