Mix well before adding to potato mixture. Peel, slice and cook ... cooked in, and mash. Then add chopped onion, ... boiled eggs into mashed potatoes. Mix well. Then add dressing to potato mixture and mix ... bowl of potato salad.
Cook mushrooms and onions in 2 tablespoons dressing over medium-high heat. Add flour ... Top casserole with potato mixture; broil until golden. Sprinkle ... to melt. Serves 6.