How long do I cook lasagna that is chilled?

1. Preheat the oven to 375 degrees F (190 degrees C).

2. Cover the chilled lasagna with foil. This will help to keep it from drying out.

3. Bake the lasagna for 40-45 minutes. Use a meat thermometer to check that the internal temperature has reached 165°F (74°C).

4. Let the lasagna rest for 15 minutes before slicing and serving. This will allow the juices to redistribute and prevent the lasagna from falling apart.

Microwave Oven

1. Preheat oven to 375 degrees F (190 degrees C). This step helps ensure the lasagna heats evenly while preventing burnt edges.

2. Cover the chilled lasagna with aluminum foil. Foil helps preserve the lasagna’s moisture during the reheating process.

3. Microwave on high for 5 minutes. Heating the lasagna for a few minutes before putting it in the oven gives it a head start on reheating.

4. Place the microwave-safe dish with the lasagna in the oven and bake covered for 15 minutes. This step allows the casserole to heat evenly without overcooking.

5. Check using meat thermometer that lasagna has reheated to the internal temperature of 165 degrees F. It is important not to serve the meat dish if it has not reached the correct temperature.

6. Remove the lasagna from the oven and let it cool for 5-10 minutes. This allows the lasagna to settle before cutting and serving, ensuring a clean slice and preventing the dish from falling apart.