4 hard boiled eggs, coarsely chopped
3/4 c. diced, cooked ham
1/2 c. shredded cheddar cheese
1/4 c. chopped celery
1/4 c. mayonnaise
2 tbsp. finely chopped onion
1/2 tsp. dry mustard
1/2 tsp. salt
1/4 tsp. pepper
4 Kaiser rolls, halved & buttered

Combine all the ingredients; mix well. Spoon onto rolls, open face style. Put on a cookie sheet or other flat baking dish. Bake at 400 degrees 15 minutes or until the cheese melts and the tops of sandwiches look a little toasty.