Chop day-old bread into 1-inch pieces, so you have around 10 cups.
Option: If using fresh bread, chop and then toast on low heat (225°F or 110°C) for 40 minutes.
Preheat oven to 350°F (180°C).
In a large skillet over medium heat, melt 1 Tbsp butter. Add pancetta and sauté until crisp and golden, around 8-10 minutes. Transfer pancetta to a large mixing bowl.
In the same skillet, melt remaining butter. Add onions, celery, and garlic. Sauté until tender, around 8-10 minutes.
Stir in chopped prunes and fresh herbs, cooking for another 1-2 minutes.
Transfer mixture to bowl with pancetta. Add chopped bread, salt, and pepper, tossing to coat.
Add broth to moisten. Whisk eggs, then mix into stuffing mixture.
Transfer to a greased 13x9-inch casserole dish or glass baking dish. Cover with foil. Bake around 30 minutes, until heated through. Uncover and bake until top is crisp and golden, around 10-15 minutes more.
Serve warm and enjoy!
To store, cover dish with a lid or foil, or transfer stuffing to an airtight container. Store in the fridge for up to 1 week.