Follow these simple steps to create your Bruschetta Chicken Casserole:

1. Preheat Oven: Preheat your oven to 375°F (190°C).
2. Prep the Chicken: If not already done, cook and shred the chicken. Set it aside.
3. Mix Tomatoes: In a large bowl, combine the halved cherry tomatoes, minced garlic, balsamic vinegar, olive oil, salt, pepper, and Italian seasoning. Stir until well combined.
4. Combine Chicken and Tomatoes: Add the shredded chicken and chopped basil to the tomato mixture. Gently fold everything together to ensure even distribution.
5. Prepare Baking Dish: Grease a 9×13-inch baking dish with cooking spray or olive oil.
6. Layer the Mixture: Pour the chicken and tomato mixture into the prepared baking dish. Spread it evenly.
7. Add Cheese: Top with shredded mozzarella cheese, covering the entire surface.
8. Add Breadcrumbs (Optional): If desired, sprinkle breadcrumbs on top for a crunchy texture.
9. Bake: Place the casserole in the preheated oven and bake for 30-35 minutes, or until the cheese is bubbly and golden.
10. Check for Doneness: Ensure the casserole is heated through and the cheese is properly melted.
11. Garnish: Remove from the oven, and let it sit for a few minutes before serving. Garnish with additional basil leaves if desired.

This step-by-step guide leads you to an incredible Bruschetta Chicken Casserole that you and your loved ones will adore.