1 1/2 c. shredded Swiss cheese
12 slices bacon, cooked and crumbled
5 tbsp. mayonnaise
1 1/2 tbsp. grated onion
1 tsp. celery salt
12 slices day old sandwich bread crust removed and cut into thirds

Combine first 5 ingredients; blend well. Spread cheese mixture over each piece of bread. Bake at 325 degrees for 10 minutes.