While it's challenging to achieve the same level of crispiness in a microwave as you would in a conventional oven, there are a few tips you can try to make your pizza slightly crispier:
Use a microwave-safe crisping tray: Look for specialized microwave crisping trays or microwave-safe dishes with built-in grates or ridges. These trays elevate the pizza off the surface, allowing hot air to circulate underneath and help crisp the crust.
Preheat the crisping tray: Before placing the pizza on the crisping tray, preheat it in the microwave for a couple of minutes. This step helps to create a slightly hotter surface for the pizza to rest on, promoting crispiness.
Opt for thin crust or thin-crust-style pizza: Thin crust pizzas tend to fare better in the microwave when it comes to achieving crispiness. Thicker crusts tend to become chewy rather than crispy. Alternatively, you can also try using pre-made thin-crust-style frozen pizzas designed for microwave cooking.
Avoid using a microwave cover or wrap: Using a cover or wrap traps moisture, which can make the crust soggy. Instead, leave the pizza uncovered during microwaving to allow the steam to escape and minimize moisture buildup.
Microwave in short bursts: Rather than microwaving the pizza continuously, try microwaving it in short bursts of 30 seconds to 1 minute. This approach allows you to monitor the progress and prevent overheating. Pause and check the crispiness after each burst, and continue microwaving as needed.
Finish with a quick broil: If you have access to a broiler or grill, you can transfer the microwaved pizza to the broiler for a few minutes to quickly crisp up the top. Be sure to keep a close eye on it to prevent burning.
Remember that while these tips can help improve the crispiness of microwave-cooked pizza, the texture may still differ significantly from that of oven-baked pizza. Microwaves primarily heat food by generating steam, which can lead to a softer crust.