01 -
Lightly coat a 9 x 13 inch pan with non-stick cooking spray. Layer dried bread cubes in the bottom of the pan.
02 -
Sprinkle shredded cheddar cheese over the bread cubes. Top with an even layer of bacon pieces.
03 -
Whisk eggs well. Add milk, dry mustard, and optional salt. Mix thoroughly, then pour the mixture evenly across the casserole dish.
04 -
Cover the casserole dish and refrigerate overnight.
05 -
Remove the casserole from the refrigerator while preheating the oven to 350°F. Cook uncovered for 30 to 45 minutes, or until the center is set.