Can a 8x8 pan be replaced by pie plate?

* Measure your pie plate's diameter. A standard 9-inch pie plate would not be a suitable replacement for an 8x8 pan.

* Compare the surface areas. An 8x8 pan has a surface area of 64 square inches. A 9-inch pie plate has a surface area of 63.62 square inches (π * radius^2). So, a 9-inch pie plate is almost the same size as an 8x8 pan.

* Consider the depth. An 8x8 pan is typically deeper than a pie plate. This could affect the cooking time and the final texture of your dish.

Recommendations:

* For baking: A 9-inch pie plate is a decent substitute if you're baking something that doesn't require a deep pan.

* For casseroles: A 9-inch pie plate is probably too shallow for most casseroles. You'd need to use a larger pie plate or a different baking dish.

The best way to know for sure is to check the recipe. Many recipes will specify the type of baking dish needed. If the recipe doesn't specify, try researching similar recipes to see what kind of dish they use.