In the refrigerator the other day I found myself face to face with a beautiful bag of bagels that were, unfortunately, not tender to the touch. I had but one thing in mind. Slice those babies thin and bake ‘em into crispy submission!
When confronted with old and hard bagels, I make Bagel Chips!
Slice bagels very thin. This is easiest when they are good and stale.
Brush lightly with olive oil and sprinkle with sea salt & seasonings.
Substitute butter or olive oil non-stick spray.
Place slices on a rack or foil lined pan.
Broil on low 1-2 minutes or until golden, flipping once.
Use this technique for other stale baked goods to make croutons and crustini.
Nancy Warner 
Umm, look tasty. Makes me want to get out my cream cheese and apple butter spread. Your picture is wonderful!
Marty R.