How long can I keep lasagna in the fridge before cooking?

In this brief guide, we are going to answer the question “how long can I keep lasagna in the fridge before cooking” with an in-depth analysis of the shelf life of lasagna. Moreover, we are going to discuss tips to properly store lasagna.

So without much ado, let’s dive in and figure out more about it.

How long can I keep lasagna in the fridge before cooking?

An unbaked, only assembled lasagna can stay in the fridge only a day before baking it. On the other hand, if you are assembling and baking the lasagna ahead of time you should keep it in the fridge for no more than 3-4 days.

Thus, the cold temperature of the fridge will decrease the rate of bacterial growth and will subsequently prolong the shelf life of your lasagna.

The proper way to store your lasagna in the fridge is to put it in the air-tight container or zip lock bag once you have cooled it thoroughly at room temperature. It is best practice to refrigerate the leftovers of your lasagna within 2 hours after the lasagna is being cooked. Moreover, even in the case of assembled but unbaked lasagna, it is recommended to store it in the fridge within 2 hours it is assembled. 

How long does lasagna stay at room temperature?

Lasagna lasts for about 2 hours when kept out at room temperature. 

You should discard the lasagna that has been left in open for more than 2 hours as bacterial growth takes place at a faster pace between the temperature of 40 and 140 degrees Fahrenheit, therefore there are greater chances of the lasagna being already contaminated with bacteria when left out for more than 2 hours.

Moreover, if the temperature of the surroundings is about 90 degrees Fahrenheit, then the process of spoilage takes place at a faster pace and it is recommended to discard lasagna that is left out in the open for more than an hour at 90 degrees Fahrenheit.

How long does lasagna last in the freezer?

Lasagna if kept in an air-tight container or plastic freezer bag in the freezer can last for about 2-3 months provided that it was stored properly. 

Thus keeping the lasagna in the freezer will increase its shelf life considerably owing to the cool temperature of the freezer that halts the bacterial growth on lasagna.

It is worth mentioning that the figures mentioned above are the estimated shelf life of the lasagna.

How to thaw frozen lasagna properly?

You can thaw frozen lasagna by leaving them in the fridge overnight. The lasagna that you thaw in the fridge can stay there for 3-4 days before you decide to reheat and eat it.

But if you thaw your lasagna in the microwave, it is advised to consume it immediately after reheating it.

You can read how to make lasagna here.

Other FAQs about Lasagna which you may be interested in.

Does lasagna taste better the second day?

Can I refrigerate the reheated lasagna?

So once you have reheated the lasagna, you should never refrigerate it. As when you reheat the lasagna, its temperature rises more than 40 degrees Fahrenheit and we know that bacteria grows at a faster rate between 40 and 140 degrees Fahrenheit. So the bacteria will find their way to your lasagna and you should never refrigerate the reheated lasagna.

Tips to properly store lasagna

  1. You should always store your lasagna at 40°F or below. Bacterial growth takes place at a faster pace between the temperature of 40°F and 140°F, therefore it is always advised to store your lasagna at a lower temperature.
  1. It is a good practice to store lasagna on one of the shelves of the refrigerator rather than the door as there is a lot of temperature fluctuation at the door of the fridge that can mess up the quality of lasagna.
  1. One thing to keep in mind is to let your lasagna cool thoroughly before putting it in the container or the zip-lock bag. If you put steaming hot lasagna in these airtight bags or containers, the moisture will build up inside them which can provide suitable conditions for the bacteria to grow. Even in the case of unbaked lasagna, you should let the sauce that you used in the making of lasagna cool down before storing it in the fridge.
  1. Do not leave your baked or unbaked lasagna out in the open for more than 2 hours or else bacteria will contaminate it.
  1. Thaw the lasagna properly before reheating it. If you are thawing your lasagna by keeping it in the refrigerator then you can reheat and utilize it within 3-4 days but if you are directly thawing and reheating it in the microwave it is recommended to consume it immediately.

Conclusion

In this brief guide, we answered the question “how long can I keep lasagna in the fridge before cooking” with an in-depth analysis of the shelf life of lasagna. Moreover, we discussed tips to properly store lasagna.

Citations

https://www.providencejournal.com/article/20140115/lifestyle/301159867#:~:text=A%3A%20If%20you%20assemble%20and,refrigerate%20it%20before%20baking%20it.
https://thesouthern.com/lifestyles/food-and-cooking/be-careful-when-putting-lasagna-together-ahead-of-time/article_e2c6586b-4cfd-5cf3-8e62-2c1ef3495e49.html
https://www.stilltasty.com/fooditems/index/17516

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.