A casserole dish is a deep, oblong-shaped baking dish with high sides. It's generally made from ceramic or glass, but sometimes it can also be made from stainless steel.
A casserole dish is perfect for baking dishes like lasagna or shepherd's pie. But it can also be used to make desserts like crème brûlée or chocolate brownies. And because the sides are so deep, it prevents food from sticking to the pan and making cleanup a hassle.
If you're looking for a high-quality casserole dish, I'd recommend checking out Thermosteel casserole dishes. Made entirely from stainless steel, these dishes are durable, easy to clean, and come with a lid to help keep your food warm.