This recipe is very adaptable.
Use different types of bread, or a mixture of what you have on hand. Bread that is least a day old is best. Any stale bread that is not too hard is fine.
You can omit the cheese and onion flakes and add 1/4 cup / 60 ml sugar for a sweet version.
For the chopped apples, substitute berries or other fresh or dried fruit.
Vary the spices: try cardamom, ginger or nutmeg.
Use all milk, or substitute part cream or evaporated milk .