One loaf of French Bread sliced into about 1.5 inch slices is more than one 9 x 13 casserole dish. It made an additional 9 x 9 casserole dish for me. I just made up 1/2 of the recipe so that I could use the whole loaf of bread!
This was GREAT as leftovers the next day. I just microwaved it for around a minute!! Yummy!