Reheating nachos can be a bit tricky, as you want to avoid sogginess while ensuring the cheese is adequately melted. The best method is to use the oven. Preheat your oven to 180°C (350°F). Spread the nachos in a single layer on a baking tray lined with parchment paper to prevent sticking. If they're topped with toppings like salsa or guacamole, it might be wise to scrape those off before reheating, as they can make the chips soggy. Once the oven is ready, pop the tray inside for about 10 minutes, or until the cheese is bubbling and the chips are warmed through. Keep an eye on them to prevent burning. If you're in a hurry, you can also use the microwave, but the texture won't be as crisp—heat them in short bursts of around 30 seconds, checking frequently. Serve them up with fresh toppings for that just-made taste!