If you have underdone pizza crust on already sliced pizza slices and you want to fix it without having the toppings ooze all over the place, here's a method you can try:
Preheat your electric oven to the highest temperature setting available. Typically, this would be around 450°F to 500°F (230°C to 260°C). Make sure to preheat with the oven rack in the middle position.
Carefully remove the pizza slices from any trays, plates, or packaging they might be on. Place a piece of aluminum foil on the oven rack to catch any potential drips or toppings that may fall during the process.
Place the pizza slices directly on the oven rack, making sure they are balanced and won't fall through the gaps.
Bake the pizza slices in the preheated oven for a short duration. Start with a conservative time, such as 2-3 minutes, to avoid overcooking the toppings.
Keep a close eye on the pizza slices as they bake. You want the crust to crisp up and cook through without burning the toppings.
After the initial baking time, check the pizza slices to see if the crust has reached the desired level of crispiness. If the crust is still underdone, continue baking for another minute or so and check again. Repeat as necessary, but be cautious not to overcook the toppings.
Once the crust is properly cooked, carefully remove the pizza slices from the oven using a spatula or tongs. Allow them to cool for a short while before serving to avoid burning your mouth.
By baking the pizza slices directly on the oven rack, you'll expose the crust to direct heat, which will help it become crispy. However, it's important to keep a close eye on the process to prevent the toppings from overheating or dripping excessively. The aluminum foil placed below the slices will help catch any potential mess.
It's worth noting that the exact baking time may vary depending on the thickness of the crust and the specific toppings used. Therefore, it's essential to monitor the slices closely and adjust the baking time accordingly to achieve the desired results.