How to Can Peanut Butter? (You Can’t But Do This Instead)


As a Southern cook and a great lover of peanuts, raw, boiled, and roasted, I think the question here should be “Can you can peanut butter?”. In my over 50 years of cooking and canning, I’ve pulled up, picked off, washed, boiled, roasted, made candy from, and eaten my fair share of peanuts, but I’ve never canned peanut butter.

Peanut butter cannot safely be canned because of its density and low acidic level which can make it go rancid relatively quickly. The solution is that, instead of canning and storing peanut butter, you can just preserve peanuts by drying or roasting them and then make peanut butter as needed.

The rest of the article will go into greater detail on the topic so you can enjoy your own homemade peanut butter as safely as possible. I’ll even throw in a recipe for making your own delicious peanut butter for good measure.

Why Can’t Peanut Butter Be Canned by Using the Home Canning Process?

The primary reason that peanut butter cannot or should not be canned at home by using the home canning process is that The National Center for Home Food Processing does not recognize canning peanut butter at home as a safe practice. They only recommend canning green peanuts in the shell.

They are constantly checking home canning procedures for safety factors to change and improve canning practices as needed.

Besides the fact that the oil in peanuts goes rancid fairly quickly, here are two major reasons peanut butter cannot be canned:

  • Foods that are too dense to allow water to freely flow through and around the foodstuff, as would be the case with peanut butter, can trap bacteria in pockets which are under processed. This is why you can’t puree pumpkin prior to canning, and why you can’t use thickening agents in canned foods.
  • If the acidity level is too low as is the case with peanuts, C. Botulinum can produce the most potent toxin known to man while your canned goods are sitting in your pantry.

How to Preserve Peanuts

If you buy or grow peanuts, the freshly harvested peanuts can be boiled, canned, frozen, dried, or parched. How you prefer to eat the peanuts will determine how they should be stored.

Here are x different methods of preserving peanuts:

1. Preserving Green Peanuts Unprocessed

Whole green peanuts:

  • Can be stored in a cool dry area for 2-½ to 3 months.
  • Can be stored in the refrigerator for approximately 6 months.
  • Can be stored long term in the freezer where they will remain good indefinitely as long as they are kept at 32 degrees or less.

Cool Fact: Whole peanuts in the shell last up to four times as long as shelled peanuts.

2. Boiling Peanuts

Boiled peanuts which are made from green peanuts are a delicacy in many parts of the country and can be made by following this recipe.

  • Wash the peanuts well.
  • Put them into a large pot and cover with water.
  • Add a generous amount of salt, depending on how many peanuts you are cooking, or approximately 1/3 cup of salt per pound of peanuts.
  • Bring them to a boil over a high heat, reduce heat slightly, and cook for 3 hours or more until tender, stirring occasionally and adding water as needed.

Boiled peanuts should be refrigerated immediately after they have cooled. They will keep in the refrigerator for a week to 10 days. They can also be placed into airtight containers or freezer bags and frozen. They will keep in the freezer indefinitely as long as they are kept at 32 degrees or below.

3. Hot Packing Green Peanuts

Hot pack and pressure can whole green peanuts in the shell by following the approved canning principles. The exact length of time they should be processed will depend on the type of canner being used and the elevation where they are being canned. Here is a link to the step-by-step process.

Canned green peanuts should then be stored in a cool dry area, such as the pantry, away from any direct heat or light source where they will remain good for up to 5 years.

4. Making Dried Peanuts

  • Green peanuts can also be spread out on trays and left in a cool, dry area to dry.
  • Once green peanuts have been dried, they can be stored by placing them into airtight containers in a cool, dry place like a pantry or a root cellar and will last for 4-6 months.
  • Dried peanuts can be put into airtight containers in the refrigerator where they will last for up to 6-8 months.
  • They can also be placed into airtight containers and stored in the freezer at 32 degrees or lower where they will keep indefinitely.

5. Roasting Peanuts:

To make roasted peanuts, place dried peanuts in a single layer on a baking pan and bake in a 350-degree oven for 30 minutes. Stir or turn over halfway through the process.

Roasted peanuts can be in an airtight container in:

  • At room temperature in a cool dry area for up to 6 months.
  • The refrigerator for up to a year.
  • The freezer indefinitely.

What Kind of Peanuts can be used to make Peanut Butter?

Peanuts-Mortar-and-Pestle

Dried or roasted peanuts, any kind of peanuts except boiled, can be used to make peanut butter by following the directions below.

How to Make Peanut Butter

You will need 2 cups dried or roasted peanuts and salt (to taste- optional)

  1. Pour peanuts into a food processor or blender.
  2. Process in small batches until smooth. Process only 20-30 seconds at the time to prevent burning out the motor of your food processor.

Once you are done processing the peanut butter, store it in an airtight container in the refrigerator and it will remain good for 4-6 months.

Pro Tips: If peanut butter becomes too hard in the refrigerator, stir in a little olive oil to make it smoother and more spreadable.

Also, other nuts and sunflower seeds can also be processed using this recipe.

Be sure to check out my article on How to Make Powdered Peanut Butter | A Quick Guide.

How to Extend the Shelf Life of Homemade Peanut Butter:

Here are 4 tips to maximize how long peanut butter will last:

  1. Homemade peanut butter should be kept refrigerated.
  2. Limit the time that homemade peanut butter remains unrefrigerated.
  3. Use a dedicated serving spoon or knife for the peanut butter so that there is no cross-contamination with other food.
  4. Do not leave the lid off the peanut butter container for an extended period of time to avoid airborne contamination.

How to Tell When Peanuts or Peanut Butter Have Gone Bad

It is the natural oils contained within the peanuts that become rancid. You can tell when peanuts or peanut butter are bad because of the rancid odor and taste or mold might be growing in the container. In either case, discard the entire container and contents immediately.

Final Thoughts

While it would be nice to make a large amount of peanut butter once a year to last until harvest time for peanuts the following year, safety has to come first when preparing food for our family’s consumption.

But, with the ability to store peanuts long-term, we at least can make homemade peanut butter in smaller batches throughout the year to satisfy our peanut butter needs.

I hope this article has been helpful. Thanks for stoppin’ by!

For more, don’t miss Is Peanut Butter a Good Survival Food? How Should It Be Stored?

Anne James

Hi, I'm Anne but my grandchildren call me Jelly Grandma. I have over 50 years of experience as a Southern cook and am a retired librarian. I love sharing what I have learned. You can find me on YouTube as well! Just click the link at the bottom of your page. I hope your visit here has been a sweet one.

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