If you're reheating from frozen, first thaw the cakes in the fridge overnight. To get the crispiest griddle cake after you reheat it, I recommend warming them in an oven, toaster oven, or heating them in a skillet. To reheat in the oven: Place the corn cakes on a baking sheet and heat at 350 degrees for 8-10 minutes. To reheat on the stovetop: Spray a large skillet with olive oil cooking spray. Add the cakes and cook on both sides until they are warmed through. To reheat in the air fryer: Add the griddle cakes to the basket, so they aren’t touching, and heat them at 325 degrees for 5-10 minutes or until hot all the way.  I don't recommend reheating in the microwave as it won't make your cakes nice and crispy!