Creating this Savory Zucchini Bread Pudding is straightforward if you follow these easy steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C) and grease a 9×13-inch baking dish.
2. Cook Vegetables: In a large skillet, heat the olive oil over medium heat. Add the diced onion and sauté until soft, about 5 minutes.
3. Add Zucchini and Garlic: Incorporate the diced zucchini and minced garlic, cooking for an additional 5-7 minutes until softened.
4. Season: Stir in the dried oregano, salt, and black pepper. Remove from heat and allow the mixture to cool slightly.
5. Prepare Bread: In a large bowl, combine the cubed bread with the zucchini mixture, tossing gently to combine.
6. Mix Eggs and Milk: In another bowl, whisk together the eggs and milk until fully combined.
7. Combine Mixtures: Pour the egg and milk mixture over the bread and zucchini, stirring until the bread is well coated.
8. Add Cheese: Fold in the shredded cheese and mix well.
9. Transfer to Dish: Spoon the entire mixture into the prepared baking dish, spreading it evenly.
10. Top with Parmesan: Sprinkle the grated Parmesan cheese on top for an extra crispy crust.
11. Bake: Place in the preheated oven and bake for 40-45 minutes or until the top is golden brown and the custard is set.
12. Cool Before Serving: Remove from the oven and allow it to cool for about 10 minutes before serving.

With these clear instructions, you’re well on your way to whipping up this incredible dish!