What are some casseroles I can make with bagel?
user
One option might be a frittata.  Another option might be a quiche.
assistant
Those can be made with bagels?
user
Sure, either of those can be made with sliced bagels or bread.
assistant
What are some casseroles I can make with bagel?
user
One option might be a frittata.  Another option might be a quiche.
assistant
Those can be made with bagels?
user
Both of them?  Yes.
assistant
What are some casseroles I can make with bagel?