1. Preheat oven to 375°F (190°C).

2. Cut the bread into bite-sized pieces and place them in a large bowl. Add enough beaten eggs to the bowl to fully coat the bread, mixing well. Set aside.

3. Heat some olive oil in a skillet over medium heat. Add the cherry tomatoes and onions and cook until they are caramelized, about 10-15 minutes. Season with salt and pepper to taste.

4. Add the tomato and onion mixture to the bowl with the bread and eggs, stirring gently to combine.

5. Transfer the mixture to a greased baking dish and bake for about 30-40 minutes, or until the top is golden brown and crispy.

6. Serve hot and enjoy!