The microwave may heat faster; but it also could be more disastrous faster & easily ruin a good dish!!! I often use the oven on 250 when it’s something I really want to enjoy!!! The other things that I’ve found to be successful is to do a pot in pot heating. Take a ramekin, add the dish you want to reheat, cover with foil, place a couple of knives or spoons (whatever you have that will lay in your boiler, add water to the boiler, place ramekin on top of the knives (or whatever) & bring water to a boil. This doesn’t usually take very long to heat whatever is in the ramekin. Just make sure the ramekin stays above the water level so you don’t have water getting in your food. This should just steam it back to life!!! I discovered this while using my Instant Pot & discovered it works well on the stove on a day my IP was busy