2 pkg. corned beef, finely chopped
2 c. shredded Swiss cheese
1 (8 oz.) can sauerkraut
1 c. light mayonnaise
1 tsp. dry mustard
Party rye or pumpernickel bread

Drain and rinse sauerkraut. Mix all ingredients together. Bake at 350 degrees for 30 minutes. Serve warm with rye or pumpernickel bread.