3/4 c. shredded sharp Cheddar cheese
2 c. hot mashed potatoes
1/2 c. sour cream
1 1/2 tsp. salt
3 tbsp. chopped chives
3 eggs, separated

Preheat oven to 350 degrees. Combine first 5 ingredients. Mix well. Beat egg whites until stiff but still moist; set aside.

Beat yolks until smooth and add to potato mixture. Whip until light. Fold in the beaten egg whites and pour into a greased 1 1/2 quart casserole. Bake 45 minutes and serve immediately. Garnish with additional chives. Serves 6.