grandma's secret

Since the bread in this casserole soaks up the egg mixture, the bread does not need to be fresh and soft. In fact, Grandma said dried bread made a puffier casserole. She kept a bag of leftover yeast rolls, bread heels and other dried yeast bread in the freezer until she had the equivalent of eight slices. Any bread that wasn't cut into a slice, such as a yeast roll, she tore into pieces and layered the pieces over the bottom of the baking pan.