Lasagna is a classic Italian dish that is popular all around the world. It’s a baked pasta dish that is made up of layers of lasagna noodles, meat, cheese, and sauce. Lasagna is a hearty and filling meal that can be enjoyed for days after it is made.
However, many people are unsure how long lasagna lasts and whether it is safe to eat after a certain period of time. In this blog post, we will explore how long lasagna lasts, how to store it properly, and how to tell if it has gone bad.

How Long Does Lasagna Last?
The shelf life of lasagna can vary depending on several factors, such as the ingredients used, the storage method, and whether it has been cooked. Generally speaking, lasagna can last in the fridge for 3–5 days and in the freezer for up to 3 months.
Fresh lasagna that has not been cooked can be stored in the fridge for up to 5 days. If you have made lasagna and have leftovers, make sure to store it in an airtight container in the fridge as soon as possible. It is also important to cool the lasagna completely before storing it in the fridge to prevent the growth of harmful bacteria.
Cooked lasagna can also be stored in the fridge for up to 5 days. However, I should mention that the longer lasagna sits in the fridge, the more its texture and flavor will deteriorate. When reheating lasagna, make sure it is heated all the way through to prevent any potential bacteria from surviving.
Lasagna can also be frozen for longer storage. When freezing lasagna, it is essential to wrap it tightly in plastic wrap or aluminum foil to prevent freezer burn. It is also recommended to store the lasagna in single-serving portions so that it can be easily reheated as needed.
In the freezer, lasagna can last up to 3 months. However, it is important to note that the longer lasagna is frozen, the more its texture and flavor will deteriorate. When reheating frozen lasagna, make sure to thaw it in the fridge overnight before reheating it in the oven. This will ensure that it is heated all the way through and that the texture is not compromised.
How to Store Lasagna Properly
Proper storage is essential to ensure that the lasagna lasts as long as possible. When storing lasagna, you should use an airtight container to prevent air and moisture from getting in. This will help to prevent the growth of bacteria and keep the lasagna fresh for longer.
If you are storing lasagna in the fridge, make sure to cool it completely before storing it. This will help to prevent the growth of harmful bacteria. You should also label the container with the date it was made so that you can keep track of how long it has been in the fridge.
If you are freezing lasagna, make sure to wrap it tightly in plastic wrap or aluminum foil. This will help to prevent freezer burn and keep the lasagna fresh for longer. It is also important to label the container with the date it was made so that you can know how long it has been in the freezer.
How to Tell if Lasagna has Gone Bad
It is good to be able to tell if lasagna has gone bad to avoid getting sick from eating it. There are several signs that lasagna has gone bad, including:
- The lasagna has a sour or unpleasant smell
- The lasagna has a slimy texture
- The lasagna has visible mold or discoloration
- The lasagna has a bad taste
If you notice any of these signs, discard the lasagna immediately. Eating spoiled lasagna can lead to food poisoning and other illnesses, so it is better to err on the side of caution and throw it away if there is any doubt about its freshness.
In addition to the signs above, it is important to note that if the lasagna has been left out at room temperature for more than two hours, it should be thrown away. Bacteria can grow quickly at room temperature, so it is best to refrigerate or freeze lasagna as soon as possible after it has been cooked.
How To Reheat Lasagna
After learning about ways to store lasagna, you also should learn how to reheat it with an oven, a microwave, or even a skillet to make it taste delicious just as it would fresh out of the oven.
Using The Oven
- First, preheat the oven to 400’F
- Wrap the lasagna in aluminum foil and put it on a middle shelf of the oven
- Reheat until the fillings start sizzling. Then take a kitchen thermostat to measure the inside temperature and check whether it reaches 165’F or not. Depending on how big the lasagna or how many layers, you might spend about one hour.
Using The Microwave
- Prepare a microwave-safe tray or plate and then put the lasagna into it. Remember to cover with the microwave-safe plastic wrap to avoid splashing.
- Set the defrost mode to thaw the cooked lasagna. Depending on the size, it might take from 5 to 10 minutes.
- Set the heat mode at full power once the lasagna is thawed. For small sizes, reheat for 2 to 3 minutes. For bigger ones, 5 to 10 minutes is the best. Don’t forget to measure the temperature and ensure the lasagna reaches, 165 F.
Using The Skillet
- Put the thawed lasagna from the refrigerator in the skillet.
- Heat the stove from medium to high heat.
- Add a bit of water, stock, or pasta sauce along the skillet’s sides to loosen up the lasagna.
- Cover the lid and turn the heat down so that the pasta absorbs the sauce and makes the layers soften.
- Stir around and cook for about 15–20 minutes.
If you need the best result and quickest reheating, make sure you thaw the lasagna in the refrigerator overnight. In case you want a quick reheating from frozen, thaw it in the microwave and then complete it in the oven.

Common Questions About Lasagna
What can I serve as a side dish with lasagna?
The best side dishes for lasagna are garlic bread sticks, salads, and green beans. For a full list, browse through my top 12 sides to serve with lasagna post.
How long is a lasagna good in the fridge?
Lasagna that has been cooked is safe to store in the refrigerator for a maximum of five days.