1 c. tuna
1 c. celery
1 onion, minced (optional)
1/2 c. Colby cheese
1/2 c. chopped black olives
1/4 c. mayonnaise
A little salt and pepper
6 buns, buttered

Mix all ingredients. Spread on buns. Wrap in foil; refrigerate for 30 minutes. Bake at 350 degrees for 20 minutes.

For microwave cooking: Spread mixture on buns. Wrap in wax paper. Refrigerate for 30 minutes. Set microwave on medium-high for 10 minutes or until the cheese melts. This can be used with chicken instead of tuna also.