This Greek broccoli gratin is a delicious and nutritious side dish. Fresh broccoli florets are blanched and then baked in a creamy and flavorful sauce made with Greek yogurt, feta cheese, and herbs. The gratin is topped with a crispy breadcrumb and Parmesan cheese crust, adding a delightful crunch to every bite. Serve this Greek broccoli gratin alongside roasted chicken or grilled fish for a complete and satisfying meal.