Do you need to put oil in a non stick pan?

Yes, it's generally recommended to use a small amount of oil or cooking spray in a non-stick pan, even though the surface is designed to prevent food from sticking. This helps enhance flavor and can improve the cooking process, especially for foods that are prone to sticking, like eggs or delicate fish. However, you can often cook with little to no oil for certain types of food, depending on the specific non-stick coating and your cooking method.