How To Make And Can Pumpkin Puree

You can make and can pumpkin puree at home by roasting or boiling pumpkin, blending it smooth, and then pressure canning it in a pressure canner to keep it shelf-stable.
 
It’s one of those kitchen projects that sounds intimidating but is genuinely simple once you know the steps, and the payoff is a pantry stocked with pure pumpkin you can use for pies, soups, and muffins all year.
 
If you’ve ever wondered how to make and can pumpkin puree safely, this guide walks you through it from start to finish.
 
In this post, we’ll cover how to make pumpkin puree, the right way to can pumpkin puree, and the safety rules you shouldn’t skip.
 
Let’s get into it.
 

How to Make and Can Pumpkin Puree: Making the Puree First

Before you can pumpkin puree, you need to make pumpkin puree that’s smooth, thick, and free of excess water.
 
Here’s how to make it happen.
 

1. Choose the Right Pumpkin

The best pumpkins for making and canning pumpkin puree are small sugar pumpkins, also called pie pumpkins.
 
Big jack-o’-lantern pumpkins are watery and stringy, which makes for a thin puree that’s disappointing in recipes.
 
Look for pumpkins that feel heavy for their size with a firm, unblemished skin.
 

2. Roast the Pumpkin for the Best Flavor

You can make pumpkin puree by boiling, steaming, or roasting, but roasting gives you the richest flavor.
 
Cut the pumpkin in half, scoop out the seeds and stringy bits, and place the halves cut-side down on a baking sheet.
 
Roast at 400°F for about 45 to 60 minutes, until the flesh is fork-tender and the skin is easy to pierce.
 

3. Scoop and Blend the Flesh

Once the pumpkin is cool enough to handle, scoop the flesh away from the skin and discard the skin.
 
Blend the flesh in a food processor or blender until completely smooth, working in batches if needed.
 
If your puree looks watery, strain it through a cheesecloth-lined colander for 30 minutes or simmer it gently to cook off extra moisture.
 
This matters because how to can pumpkin puree safely depends on the puree being thick enough, not soupy.
 

How to Can Pumpkin Puree Safely

Canning pumpkin puree isn’t like canning tomatoes or pickles, and getting this part right is essential.
 
Here’s how to can pumpkin puree the safe way.
 

1. Use a Pressure Canner, Never a Water Bath

Pumpkin is a low-acid food, so if you can pumpkin puree, you must use a pressure canner.
 
A boiling water bath won’t reach the temperatures needed to destroy botulism spores, so it’s simply not safe for canning pumpkin puree.
 
Fill the pressure canner with 2 to 3 inches of water, add the rack, and get your jars ready.
 

2. Pack the Jars Correctly

Spoon the puree into clean, hot pint or quart jars, leaving 1 inch of headspace.
 
Don’t add liquid, salt, or seasonings, and never mash or puree the pumpkin directly inside the jar, since that changes the density and canning time.
 
Wipe the rims, apply the lids and rings, and tighten them to fingertip-tight.
 

3. Follow the Right Processing Times

Process pint jars at 10 pounds of pressure (adjust for altitude) for 65 minutes, and quart jars for 90 minutes, using a weighted gauge canner.
 
With a dial gauge canner, use 11 pounds of pressure instead.
 
When you can pumpkin puree, those times and pressures come straight from USDA guidelines, and they’re not optional.
 

4. Let Jars Cool and Check the Seals

After processing, turn off the heat and let the pressure drop naturally.
 
Wait a couple of minutes, then open the lid and remove the jars with a jar lifter.
 
Let them cool undisturbed for 12 to 24 hours, then press each lid to confirm the seal is tight before storing.
 

Common Mistakes to Avoid When You Can Pumpkin Puree

Even experienced canners run into trouble with pumpkin puree, so watch out for these pitfalls.
 

1. Overfilling or Underfilling Jars

Too little headspace or too much puree in the jar throws off processing times and can cause seal failures.
 
Stick to that 1-inch headspace every single time.
 

2. Skipping the Pressure Canner

This is the biggest no-no when you can pumpkin puree.
 
If you don’t own a pressure canner, freeze the puree instead, because water bath canning pumpkin puree is genuinely unsafe.
 

3. Using Watery Puree

Soupy puree doesn’t can well, so strain or simmer it first.
 
Think mashed-potato thickness, not smoothie thickness, and you’re on the right track.
 

So, How Do You Make and Can Pumpkin Puree?

You make and can pumpkin puree by roasting a pie pumpkin, blending the flesh until smooth, packing it into jars with 1 inch of headspace, and pressure canning pints for 65 minutes or quarts for 90 minutes.
 
It takes some patience, but once you’ve done it, you’ll have shelf-stable pumpkin ready for every fall recipe you love.
 
Hope this post has helped you with learning how to make and can pumpkin puree safely and confidently.