Preheat the oven to 350°F
Cube or tear 8 cups of bread and dry it out slightly
Melt 1/2 cup butter in a skillet
Add 1 chopped onion and 2 chopped celery stalks
Cook until softened
Stir in 1 to 2 teaspoons dried sage, 1 teaspoon dried thyme, 1/2 teaspoon salt, and 1/2 teaspoon black pepper
Place the bread in a large bowl
Add the cooked onion and celery mixture
Add 2 beaten eggs
Pour in 2 to 3 cups chicken or turkey broth gradually
Mix until evenly moistened
Add chopped parsley if desired
Transfer to a greased baking dish
Cover with foil
Bake for 30 minutes
Uncover and bake for 15 to 20 minutes more until golden on top