How long does cooked lasagna last in the fridge?

In this blog post, we will answer the following question: How long does cooked lasagna last in the fridge? We will tell you how to store, freeze, and reheat lasagna. 

How long does cooked lasagna last in the fridge?

Cooked lasagna can last up to five days in the fridge if stored in an airtight container to keep out excess moisture and other contaminants.

Lasagna is a dish made with sheets of pasta, a delicious red sauce with ground meat, and layers of melted cheese that make your mouth water. It is a dish that most (or all) like for its flavor, consistency, and seasoning. In addition, it is something that performs very well.

That is why this dish is the favorite of many cooks for its lasting virtue on the table, and being one of the favorite recipes, it is something that cannot be missed, so sometimes the most feasible thing is to keep it in the freezer to have always within reach. However, it can sometimes be uncertain how long lasagna can last in the freezer, making us fear the worst if we eat it after a few weeks. 

How can I freeze lasagna?

The United States Food Safety Agency has a section on cold food preservation, there you can check the duration of different types of food in the freezer at 0 ° F or less. This equates to approximately -18 ° C, which may be the lowest temperature in your freezer.

The importance of temperature is paramount since the duration of the food depends on it. When considering the ingredients that lasagna has, we can find an approximate duration of 2 to 3 months. This is because, although ground beef can last 3 to 4 months in the freezer, cheese and sauce do not last that long, their shelf life is only two or three months. This shortens the time the meat can last.

Also, the way it enters the freezer can interfere with this duration, as well as its consistency or taste.

You can decide whether to preserve your lasagna raw or cooked, which may be a factor is how you store it. If you’re going to cook it before freezing, do it in a container that will withstand freezing, such as glass cookware. 

If the container is made of aluminum, change it to one made of glass or plastic suitable for low temperatures, if you leave it in the aluminum one it can take on the taste of metal and it will not be pleasant to the taste when defrosting.

Also, something that is highly recommended to extend its lifetime is that all the ingredients with which it was prepared are fresh. Frozen foods that thaw and lower their temperature again lose consistency, taste, and are also more likely to grow bacteria, which causes spoilage.

How to reheat lasagna?

Finally, if you have already frozen your lasagna and want to eat a little, the idea is that you do not remove all the contents of the container and heat it. Cut only the piece that you are going to eat, and close the container hermetically again, so that air with any bacteria does not enter. Heat what you are going to eat and that’s it! You can enjoy your delicious lasagna without any problem.

Humidify before reheating – When his lasagna has already been cooked, pass it again in the oven, even at a low temperature, risking drying out them. You can moisten the pasta beforehand to avoid this phenomenon. Using a brush, brush the pasta with water, which will help rehydrate it. 

When the oven is started, they will simply be reheated without annealing. For such a technique to work, the pasta in this cooking recipe must be al dente. Moistening these ingredients should not lead to overcooking. Al dente lasagna will perfectly withstand reheating in the oven.

Pre-cook the lasagna –  To make your lasagna recipes perfect when reheated, you can just start cooking without doing it completely. Divide the cooking time in half to complete the first step the day before. 

Meat and béchamel will appreciate this choice more than a long reheating which can affect the quality of the preparation. The pasta will not be dry since the cooking that will be completed will give exactly the desired result.

Without a doubt, lasagna is the dish that gives the best result after being reheated. This is due to the fact that when it is heated, the sauce that is used in its preparation dissolves, but when all that fat is cooled again, it solidifies again adhering to the ingredients and catching the flavors of the sauce.

The more meat and the more shredded it is, the greater this phenomenon will occur. That’s why reheated lasagna, cannelloni, or spaghetti bolognese are so wonderful.

In addition to this, this also favors the consistency of the sauces, since in these processes they also gain body. It is due to the fact that every time the protein is heated and cooled it releases collagen, thickening the sauce. Of course, this process should not be abused as the meat ends up becoming fibrous!


Make sure you do not exceed the recommended time for keeping cooked lasagna in the fridge. Also, before reheating, smell and have a look at your dish. Does it look good?

We think that the secret of a good reheated lasagna is making it good in the first place. For such a technique to work, the pasta in this cooking recipe must be al dente. Moistening these ingredients should not lead to overcooking. Al dente lasagna will perfectly withstand reheating in the oven.

What do you think? What is your “secret” technique to reheat cooked lasagna?


Hi, I am Charlotte, I love cooking and in my previous life, I was a chef. I bring some of my experience to the recipes on this hub and answer your food questions.

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