Burger Strata - cooking recipe

Ingredients

16 bread, slices crust removed, lightly toasted
1 1/2 lbs lean ground beef
1 cup finely chopped onion
1/3 cup finely chopped celery
1/2 teaspoon salt
1/4 teaspoon pepper
3 cups grated cheddar cheese
4 large eggs
2 tablespoons prepared mustard
2 cups milk

Preparation

Arrange 8 bread slices in single layer in greased 9x13 in pan.
Scramble-fry ground beef, onion, and celery in frying pan until beef is no longer pink. Drain. Sprinkle with salt and pepper. Mix. Layer over bread slices.
Sprinkle 2 cups of cheese over beef mixture. Cover with remaining 8 bread slices.
Beat eggs, mustard and milk together in medium bowl until frothy. Slowly pour onto bread slices. Cover. Chill overnight.
Remove cover.
Sprinkle with remaining cup of cheese. Bake uncovered, in 350 degree over for about 45 minutes until set.