This full-flavored chicken casserole recipe best dish to serve to loved ones to chase their hearts


3 boneless, skinless chicken breasts (cut horizontally if very thick)
1 or 2 tablespoons garlic powder
1 teaspoon dried oregano
Flakes of red crushed pepper, optional
A pinch of salt and fresh pepper
1 cup mozzarella cheese (or Gruyere)
2 tablespoons unsalted butter
5 large onions, finely chopped
3 cloves garlic, chopped
1/4 to 1/2 cup chicken broth
Freshly chopped, garnished parsley