1 1/2 lbs. ground beef
2 onions, minced
3 tbsp. butter
1 tbsp. tomato catsup
1 tsp. Worcestershire sauce
Salt & pepper
Beef stock
2 eggs, separated
1/2 c. cream
1/2 c. butter
1/8 tsp. garlic powder
8 to 10 potatoes, peeled, boiled and mashed
Grated Parmesan cheese

Brown beef and saute onions in butter until golden. Mix meat with onions, catsup, Worcestershire sauce and salt and pepper. Add a little meat stock and cook, covered, over low heat for 15 to 20 minutes. Beat egg yolks until light, whites until stiff. Beat yolks, cream, butter and garlic powder into mashed potatoes. Gently fold in beaten egg whites. Put mixture into casserole and top with potatoes. Sprinkle with Parmesan cheese and bake at 350 degrees until puffed and brown.