Arrange the cubed bread on a baking sheet (I used two). Drizzle the melted butter over the bread and mix if needed to distribute the butter better. Season with black pepper.
Bake the bread in the oven for 10 minutes and remove. Turn down the oven to 375°F.
Add the toasted bread, drained potatoes, diced onions and celery, chopped chicken, seasonings and parsley to a large roasting pan. Pour the chicken broth all over.
Toss those ingredients together to evenly mix.
In a separate bowl, beat the eggs with the milk.
Pour evenly all over the bread mixture.
Place the roasting pan into the oven and cook, uncovered, for 45 minutes, or until golden brown.
Remove from the oven and garnish with a little more parsley, if desired.
Notes
Although I use a chicken in this recipe, it's a great recipe with leftover turkey.You could make your own chicken broth using the carcass of the chicken, see my chicken broth recipe here.