Will Mushrooms Freeze? [How To Freeze Mushrooms The RIGHT Way]

Can You Freeze Raw Mushrooms?

Yes, fresh mushrooms can be frozen raw; however, there will be a difference in texture between raw frozen mushrooms versus blanched frozen mushrooms.

Why blanch mushrooms before freezing them? This preserves texture and taste. You know that look when you freshly steam broccoli? It gets brighter, more green. The taste is more intense as well.

That’s what happens also when you blanch or gently saute mushrooms prior to freezing. It locks in the freshness and improves the flavor.

Raw frozen mushrooms can become mushy and go bad faster. Blanching or sauteeing breaks down some of the enzymes that would degrade your mushrooms while frozen.

When Should You Freeze Mushrooms?

Short Answer – As soon as you get home! If not then definitely before they get spongey.

For wild or storebought mushrooms it’s best to freeze them as soon as you bring them home. Of course, gently saute or blanch them first to lock in the freshness and flavor.

The longer you wait to freeze them the more the nature enzymes and bacteria on and in the mushrooms break down their flavors and nutrients.

Can You Freeze Morel Mushrooms?

Yes, you can freeze morel mushrooms just as you can all mushrooms. Don’t freeze them raw. First saute them gently in a pan for a minute to lock in the flavor. You can also boil them briefly or steam them.

How To Freeze Mushrooms The Right Way

Prior to freezing mushrooms follow these quick easy steps to prep them:

  1. Lightly cook them to preserve freshness and taste – Cook them briefly first using one of these options (note that the times below are for white button mushrooms, different wild mushrooms will need more or less time – e.g. less for soft mushrooms like oysters and more for tough mushrooms like King Bolete)
    • Blanch whole mushrooms for 5 minutes and sliced mushrooms for 3 minutes. To blanch, bring a pot of water to a boil. Add your whole or sliced mushrooms to a colander or strainer with a handle. Dip the colander or strainer in the water and leave it for required time. 
    • Slice them, lay them on a single layer on a tray, then bake them at 350 degrees for 15 minutes
    • Boil them for 5 minutes for whole mushrooms and 3 minutes for softer mushrooms or sliced mushrooms. Boiling is essentially blanching. Let the water come to a boil first prior to boiling.
    • Saute them for 7 minutes. Heat the pan to medium and add some oil spray prior to adding the mushrooms.
  2. Freeze them on a baking tray for 30 minutes – After the mushrooms are lightly cooked, lay a piece of parchment paper, foil, or a silicone baking mat on baking tray. Lay the mushrooms in a single layer on the tray. Freeze them for 30 minutes.
  3. Store them in a freezer bag – Remove them from the tray in the freezer. Bag them in a freezer bag. Then put back in the freezer.

Would you rather see it in action? Watch this demo below.

How To Freeze Morel Mushrooms

Freeze morel mushrooms using the same methods as described above for all mushrooms:

  1. Blanch them for 5 minutes
  2. Freeze them on a baking tray for 30 minutes
  3. Bag them in a freezer bag for long-term storage

How To Freeze Wild Mushrooms

You can freeze any wild mushroom using the same general strategies. You will need to experiment with the cooking time. In general cooking for 7 minutes for hardier mushrooms like King Boletes. Cook shorter for 3 minutes for softer mushrooms like oysters. For mushrooms with a similar texture as white button mushrooms, blanch for the standard 5 minutes for whole mushrooms and 3 minutes for sliced mushrooms.

  1. Blanch them for 5 minutes
  2. Freeze them on a baking tray for 30 minutes
  3. Bag them in a freezer bag for long-term storage

How To Thaw Frozen Mushrooms

Ideally you’ll add frozen mushrooms directly to the dish you are cooking. The heat of cooking will thaw them and finish cooking them. It’s best to use frozen mushrooms in soups. Second best in stir frys. Keep in mind the texture will be far mushier than fresh mushrooms even with the sauteing or blanching process described above.

If you want to add them to something cold like a salad then leave frozen mushrooms in the fridge overnight to soften. We don’t recommend this though as the post-frozen texture is not as pleasant in cold dishes. You’ll get a bit more flavor if you bring them up to room temperature before using.

How To Use Frozen Mushrooms

Use post-frozen cooked mushrooms in the following meals rated from best use of frozen mushrooms to worst:

  • Soup – Best Use!
  • Pasta Sauce – Second best use! Use the stir fry method separately if you don’t want them to get too mushy in the pasta sauce
  • Enchiladas
  • Stir Fry – Reheat frozen mushrooms and vegetables in a separate pan. Add a little oil and stir fry on medium for 5 to 7 minutes. If you cook them too long or too hot they’ll turn into a soggy mess.
  • Pasta With Veggies – Use the stir fry method above separately then add them to a finished pasta dish on top
  • Raw on sandwishes and salads – Only use this if you truly love your post-frozen morels or chanterelles and use only a small amount.

How Long Do Frozen Mushrooms Last in the Freezer?

If properly blanched or sauteed then frozen you can expect your frozen store bought or wild mushrooms to last 9 to 12 months in the freezer.