1 1/2 lbs. hamburger
1/4 c. bread crumbs
1 egg
1/2 tsp. salt
2 c. leftover mashed potatoes
2 hard cooked eggs, chopped
1/2 c. Miracle whip
1/3 c. Parmesan cheese
1/4 c. chopped celery
2 tbsp. chopped green onion

Combine hamburger, bread crumbs, egg and salt. Pat meat mixture in a rectangle on waxed paper. Combine remaining ingredients, spread over meat mixture. Roll up and seal edge. Chill several hours. Slice 2" thick like a jelly roll. Bake 30 minutes at 350 degrees.