Preheat the oven to 200 degrees. While cooking, simply transfer each finished waffle from the waffle maker to the grill. Keeping waffles warm for the whole family is easy with this trick. Preheat the oven to 350 degrees while you prepare the dough and then turn off the oven.
When each waffle is ready, place it in the hot oven, right on the grill. The waffles are kept warm and crispy so that everyone can sit down to eat together. You can keep the waffles crispy while you wait for the rest to cook by placing them on a cooling rack in a slow oven. Don't stack the waffles on top of each other, the steam won't be able to escape and the waffles will be soaked.
You can also “refresh the freshness” by putting waffles in a toaster. Place the baking sheet on the hot plate and cover the waffles with paper towels. The towels will keep the waffles warm without trapping the steam or softening them. As in the previous method, the preheated oven keeps the waffles warm and crispy, but the oven isn't actually turned on when they're inside.
Instead, you can add the last touch of crunch that is normally created in the last few moments in the waffle maker, leaving a perfectly crispy waffle to serve to your guests. The waffles may not dry out as much, but as the oven cools down, it will obviously lose its ability to keep the waffles warm. It consists of preparing the waffles in advance, freezing them and then putting them in the toaster. Borrow a second waffle maker or serve food in two rounds to ensure that everyone enjoys crispy and tasty waffles.
However, if you're cooking for more people than you can handle in the time restrictions mentioned above and still want to serve crispy waffles without borrowing a waffle iron or dividing your meal time, this is probably your best option.