The versatility of a 9-inch square glass baking dish also extends beyond baking alone. While it's great for oven-baked recipes like brownies, casseroles, and cakes, it can also be used for dishes that require refrigeration. The sturdy nature of glass allows it to transition seamlessly from the oven to the fridge, making it perfect for prepare-ahead meals or desserts. You can bake a dish such as a layered dessert, let it cool, and then refrigerate it right in the same dish for easy serving.