The trick to perfectly warm pancakes is to keep the temperature of your oven high enough so that the pancakes remain warm, but not so high that they get overcooked. According to Martha Stewart, 200 degrees is the sweet spot. Place your pancakes on a baking sheet or any oven-safe dish and pop them in the oven until everyone is ready to eat.
To see whether this really proved to be the best way of keeping pancakes warm, The Kitchn put Stewart’s hack to test. They used a pancake warmer (yes, such a thing exists), tried covering pancakes in an aluminum foil, and tested the oven method to compare the pancakes for how warm they came out and whether their crispy golden edges remained intact. While the pancake warmer did nothing much in the way of keeping pancakes warm and turned out to be a pretty wasteful gadget, covering pancakes in aluminum foil turned out to be way better. The pancakes came out warm; however, since aluminium foil traps heat, they were considerably soggy. The winner? Martha Stewart’s oven hack. It kept the pancakes the right amount of warm, crisp, and fluffy.
To make the most of this hack, make sure that you don’t stack the pancakes on top of each other in the oven. That will form steam and make your pancakes soggy. Stewart also warns not to leave pancakes in the oven for too long if you want them still tasting like they’re fresh off a hot griddle.