A cast-iron skillet isn’t just for cooking savory foods. It also works amazingly well for baking, as you’ll discover with our twist on the all-American blueberry pie. What’s the secret to cast iron? It provides steady, even heat, which helps you turn out perfect pies and other desserts. Resist the urge to dig right in after you remove the pie from the oven. It needs to cool for at least 1 hour so the filling can set up.