Heat oven to 350 degrees.
Cut bagel, stuffing and turkey into bite sized pieces. Add these ingredients to a 9x13 inch casserole dish.
In a mixing bowl add eggs, milk, salt and pepper. Pour this over the ingredients in the 9x13 casserole dish.
Add cheddar cheese evenly to the top of the casserole.
Spread the gravy to the top of the casserole.
Bake on 350 for 45 minutes.