Zucchini jam is one of my favorite ways to use up that extra garden zucchini. Grated zucchini, sugar, lemon juice, and your favorite flavor of Jell-O are transformed into a sweet and fruity jam that's perfect for spreading on your morning toast.
Do you have an abundance of summer garden zucchini and don't want it to go to waste? Try making a batch of zucchini jam. It's flavored with your favorite type of powdered gelatin (like Jell-O brand) - today we're using strawberry Jell-O.
Since zucchini has a mild flavor, it takes on whatever flavors are added to it. In this case, we're using Jell-O to add the fruity flavor to our grated zucchini.
Spread zucchini jam on your morning toast or add to your next charcuterie board. Zucchini jam requires no canning and can be stored in the refrigerator for up to a month!
Ingredients and substitutions
- Zucchini - You'll need four cups, or about 540 grams of finely shredded zucchini. I recommend finely shredding your zucchini for this recipe because it softens quickly on the stovetop and melds right into your jam after it sets. Larger grated zucchini will add a noticeable texture to your jam.
- Granulated sugar - Sugar is a necessary part of jam because it sweetens your jam and helps preserve it in the refrigerator or freezer. Since we are not canning our jam today, it must be stored in the refrigerator or freezer.
- Lemon juice - Helps preserve your jam, cuts the sweetness with a little acidity, and helps prevent discoloration.
- Jell-O - Any brand or flavor of powdered gelatin dessert works here. Strawberry, peach, apricot, and cherry are popular choices when making jam. You'll need one 3-ounce box (this is the smaller of the two boxes commonly found at the grocery store) for this recipe. You can also double the recipe and use a 6-ounce box instead, if desired.
Tips and tricks
Grating your zucchini - Use the small side of a box grater to finely grate your zucchini. A fine grate melts seamlessly into the jam as it cooks. A coarse grate will leave a noticeable texture in the jam.
Cook until your jam thickens slightly - While there is a time included in the recipe card, rely more on the look and thickness of your jam. When doubling or tripling this recipe, your jam will take longer to cook down.
Don't cook too long - If you cook your jam down too long, the flavor will concentrate, jam will turn out very thick, and you'll end up with less jam overall than the quantities listed in the recipe card.
Allow jam to cool before covering - Allow your jam to cool to room temperature before adding a lid. This ensures you're not trapping excess steam and moisture in the jars.
Storage
Since we are not canning our jam, it must be stored in the refrigerator or freezer.
Zucchini jam will keep in the refrigerator for up to one month, or in the freezer for up to one year. To thaw frozen jam, transfer to the refrigerator to allow to thaw overnight.
If freezing jam, make sure to leave about 1 inch of space at the top of your jars. Your jam may expand slightly when freezing.
Frequently asked questions
This recipe makes three 8-ounce jars, or 24 ounces, of jam. Feel free to use any combination of jar sizes, like six 4-ounce jars, or a 16 ounce jar and an 8 ounce jar.
Since we're not canning our jam, your jars do not need to be sterilized first (unless you want to). Any clean, dry jars with tightly sealing lids will work.
No. Zucchini has a very mild flavor that is undetectable when paired with flavored Jell-O. Make sure you're using zucchini, not other green vegetables like cucumber, which have a strong melon flavor that would overpower your jam. Not sure which one you have on hand? Check out my post: Zucchini vs cucumber - what's the difference?
I have not tested this recipe with sugar substitutes or sugar-free Jell-O, so I can't say for sure how your jam would turn out. The sugar added to the recipe not only sweetens the jam but also helps preserve it. Sugar substitutes do not have the same preservative qualities as regular sugar, so your jam will not last nearly as long if using sugar substitutes.
This recipe is written as a freezer jam recipe and I have not tested canning it, so I can't say for sure how it would turn out. If you try canning this recipe, let us know how it goes in the comments below.
📖 Recipe
Zucchini Jam
Ingredients
- 4 cups (540 g) finely shredded zucchini, do not drain liquid out
- 2 cups (396 g) granulated sugar
- ¼ cup lemon juice
- 3 ounce box Jell-O, any flavor
Instructions
- In a stock pot over medium heat, add grated zucchini, sugar, and lemon juice. Bring to a simmer, reduce heat to medium-low, and cook for 8-10 minutes. Add Jell-O powder and stir until fully incorporated. Remove from heat and allow to cool slightly. Mixture will look thin but will continue to thicken as it cools.
- After mixture has cooled slightly, transfer into jars (leaving a 1 inch gap at the top to account for expansion when freezing) and allow to cool completely to room temperature with lids off. After jam has cooled, add lids and store in the refrigerator or freezer.
Recommended Equipment
Video
Notes
- This recipe makes 24 ounces of jam.
- Any flavor of Jell-O powdered gelatin dessert works in this recipe. Popular flavors include strawberry, peach, apricot, and cherry.
- Since we are not canning this jam, it is not shelf stable. It must be stored in the refrigerator or freezer at all times.
- Jam will keep in the refrigerator for up to one month, or in the freezer for up to a year. To thaw frozen jam, transfer to the refrigerator to allow to thaw overnight.
Hi, can you hot water process for shelf life? Thank pat
Hi Pat, this question is answered in the FAQ above the recipe card: "This recipe is written as a freezer jam recipe and I have not tested canning it, so I can't say for sure how it would turn out. If you try canning this recipe, let us know how it goes in the comments below."
Can you can this recipe
Hi Linda, this question is answered in the FAQ above the recipe card: "This recipe is written as a freezer jam recipe and I have not tested canning it, so I can't say for sure how it would turn out. If you try canning this recipe, let us know how it goes in the comments below."
Can u use frozen zucchini to make this?
Yes, frozen shredded zucchini would work.
I have a larger zucchini and am wondering if I should remove the skin.
If it's very large and has thick, tough skin, you may prefer to peel the skin off first. You may also want to scoop out any large, hard seeds before grating.
I would like to process this jam. I have several freezer jams right now. What would I need to do I. Order to make it shelf stable?
Hi Ann, this particular recipe is for freezer jam, so I haven't tested canning it and can't say for sure how it would turn out. Here's a recipe for canned zucchini jam that may work for you: https://www.allrecipes.com/recipe/146995/zucchini-jelly/
This sounds great. Wondering if sugarfree jello and sugar substitute would work for this recipe?
Hi Neila, I talk about this a bit in the post above, but in short I haven't tested this recipe with sugar substitutes so I can't say for sure how it would turn out. Sugar also acts as a preservative so your jam would likely not last quite as long when using a substitute. If you give it a try, let us know how it goes!
Hi I have a question. I doubled the recipe and instead of gettin 6 8 oz jam jars I got a total of 13!!! My first try so I’m kinda freaking out. My food processor is antique and before I realized I didn’t need blade In bottom to shred I was half way through and had really fine fine zucchini and lots of juice! I didn’t drain as per instructions. Could this be the issue? I’m waiting now to see if it is thickening.
Hi Deborah, when doubling this recipe, all of the ingredients combined equal about 13 cups before cooking (8 cups of zucchini, 4 cups of sugar, 1/2 cup lemon juice, and 6 ounces of jello powder = ~13 cups), so it sounds like the jam didn't cook down at all on the stovetop. I'm guessing that since all of the ingredients were doubled in the pan, it needs more time to simmer and reduce. Does the jam thickly coat the back of a spoon, or does it still look watery and thin? I'd recommend bringing it back to a simmer and cooking it until it looks thickened, which should reduce the amount significantly.
Delicious but only made two pints..16 oz but that’s ok plenty for just my husband and I
If you are using lemon jello … should I cut back on the lemon juice?
The lemon juice doesn't add a significant amount of lemon flavor (it's mostly there for preservation and to prevent discoloration) so I wouldn't reduce it.
Do you take the seeds out?
If you're using a larger zucchini, you may want to scoop out the seeds before grating. I used small zucchini to make this jam so the seeds were soft and grated up along with the flesh.
Thanks.
Will the jars not break in the freezer?
Mason jars are freezer safe, so they won't break in the freezer unless they're overfilled. Liquid expands when frozen, so I recommend leaving a 1 inch gap at the top of each jar.
https://www.rd.com/article/can-you-put-glass-in-the-freezer/
Can this be canned?
I have not tried to can this recipe so I can't say for sure how it would turn out.
Can you use a sugar substitute?
Hi Tammi, I have not tested this recipe with a sugar substitute so I can't say for sure how it would turn out. From the section above ("Can I make this sugar free?"): The sugar added to the recipe not only sweetens the jam but also helps preserve it. Sugar substitutes do not have the same preservative qualities as regular sugar, so your jam will not last nearly as long if using sugar substitutes.