Green Tomato Magic Jam (Mock Raspberry Jam)
Got a bumper crop of green tomatoes and a first frost coming? This is where they go. Shredded green tomatoes, sugar, and a box of raspberry Jell-O turn into a spreadable, vibrantly red jam that tastes like raspberry preserves, not like tomatoes. It’s ready in under an hour, it doesn’t need pectin, and it uses up produce that would otherwise hit the compost pile.
- ❓ What Is Green Tomato Magic Jam
- ⚖️ Mock Jam vs. Traditional Raspberry Jam
- 💖 Why You’ll Love It
- 🛒 Ingredient Notes
- 👩🍳 How to Make It
- 💡 Expert Tips
- 🎨 Variations
- 🥗 Dietary Notes
- ⏰ Make-Ahead
- 💸 Price Breakdown
- 🍽️ Serving Suggestions
- 📦 Storage Tips
- ⏳ How Long It Keeps
- ❓ FAQ
- 📝 Printable Recipe Card
- 🛒 Walmart Grocery List
❓ What Is Green Tomato Magic Jam
It’s a jam made from shredded unripe (green) tomatoes, sugar, and raspberry-flavored gelatin, simmered until thick and set. The gelatin does double duty: it colors the jam a deep red and helps it firm up into a spreadable texture without needing pectin or a long cook time. The green tomatoes contribute body and a mild tartness, but once the sugar and gelatin are in, you can’t taste tomato at all.⚖️ Mock Jam vs. Traditional Raspberry Jam
Traditional raspberry jam needs actual raspberries (expensive out of season, and green tomatoes are usually free from your own garden), pectin, and a full canning process if you want it shelf-stable. This version skips all of that. It’s a refrigerator or freezer jam, not a canned preserve, so it’s faster and lower-effort, but it also won’t have the same shelf life as a properly processed jar of real raspberry jam. If you want a version you can water-bath can, there’s a separate ratio for that further down in the FAQ.💖 Why You’ll Love It
- Uses up green tomatoes before frost takes them
- No pectin, no water bath required for the fridge/freezer version
- Ready in under an hour, start to finish
- Costs pennies per serving compared to store-bought jam
- Kids who won’t touch a tomato will eat this on toast without blinking
🛒 Ingredient Notes
Green Tomatoes – Shred 2 1/2 cups of green (unripe) tomatoes. Seeds can stay in or be scraped out, it’s personal preference and won’t change the outcome much.Sugar – 1 1/2 cups balances the tartness of the tomatoes and builds the jam-like sweetness.
Raspberry Gelatin – One 3 oz box gives the color, the flavor, and helps the jam set as it cools. Any brand works as long as it’s a standard-size box.
👩🍳 How to Make Green Tomato Magic Jam
- Shred 2 1/2 cups of green tomatoes.
- Combine the shredded tomatoes and 1 1/2 cups sugar in a large saucepan. Bring to a boil, then reduce to a low simmer for about 20 minutes, until the tomatoes release their juices and break down into a chunky sauce.
- Stir in the 3 oz box of raspberry gelatin until fully dissolved. The mixture will thicken slightly and turn a deep red as it cooks.
- Ladle the jam into clean jars or containers, leaving a little headspace.
- Let the jam cool fully at room temperature before refrigerating or freezing.
💡 Expert Tips
- Shred the tomatoes on the large holes of a box grater. A food processor works too, but it can turn the tomatoes to mush instead of shreds.
- Don’t skip the 20-minute simmer. That’s what evaporates enough liquid for the jam to set properly once the gelatin goes in.
- If you want a smoother, less chunky jam, pulse the cooked tomato mixture briefly with an immersion blender before adding the gelatin.
🎨 Variations
Swap the raspberry gelatin for blackberry or mixed berry gelatin for a different flavor and color. The ratios and method stay exactly the same, just change the flavor of gelatin.🥗 Dietary Notes
This recipe is not vegan or vegetarian, since standard gelatin is derived from animal collagen. It also isn’t naturally low-sugar; if you want a lighter version, a sugar-free gelatin mix can be substituted, though the texture and set may vary slightly.⏰ Make-Ahead
This jam is a great make-ahead project for using up an end-of-season tomato haul. Make a batch (or several) and refrigerate or freeze it in portions so you’ve got jam on hand for weeks without needing to cook again.💸 Budget101® Price Breakdown: Green Tomato Magic Jam
Ingredient | Amount Used | Walmart Item | Package Price | Cost Used |
Green tomatoes | 2 1/2 cups shredded | Garden-grown / farmers market | N/A | $0.00 |
Granulated sugar | 1 1/2 cups | $3.27 | $0.54 | |
Raspberry gelatin | 1 box (3 oz) | $1.48 | $1.48 |
| 💸 | |
| 🧾 Total Batch Cost | $2.02 |
| 👨👩👧👦 Cost Per Serving (24 servings, 2 tbsp each) | $0.08 |
| 🏪 Store-Bought (comparable 24 oz jam) | $5.95 |
| 💰 You Save | $3.93 |
📅 Walmart prices last verified July 10, 2026. Green tomatoes assumed garden-grown; store-bought comparison based on Smucker’s Seedless Red Raspberry Jam, 18 oz.
🍽️ Serving Suggestions
Spread it on toast, biscuits, or scones. Swirl it into plain yogurt or oatmeal. Use it as a filling for thumbprint cookies, or warm it slightly and drizzle it over vanilla ice cream.📦 Storage Tips
Store in an airtight container or jar in the refrigerator. To freeze, leave 1/2 inch of headspace in the container before sealing, and label with the date. Thaw overnight in the fridge and stir well before using.
⏳ How Long Does It Keep
Refrigerated, it keeps for up to two weeks. Frozen, it keeps for up to one year.Frequently Asked Questions
You need 2 1/2 cups of shredded green tomatoes, 1 1/2 cups of sugar, and one 3 oz box of raspberry gelatin.
No, it’s optional. Leaving the seeds in makes the jam look more like real raspberry jam.
Refrigerate for up to two weeks, or freeze in a sealed container with 1/2 inch headspace for up to one year.
This particular ratio is meant for the fridge or freezer, not shelf-stable canning. Use the canning-ready ratio in the notes below if you want a jarred, shelf-stable version.
No. Standard gelatin is derived from animal collagen, so this recipe is not vegan or vegetarian.
No, the green tomatoes are what gives this jam its texture and body. Substituting them changes the recipe significantly.
Raspberry-flavored gelatin, though blackberry or mixed berry gelatin can be used for a different flavor.
Yes. The method and ratios stay the same, only the gelatin flavor changes.
Green tomatoes contribute some fiber and vitamin C, though this is still a sugar-based jam and should be treated as a treat rather than a health food.
For a shelf-stable, canned version: use 5 cups shredded green tomatoes, 4 cups sugar, and one 6 oz box of raspberry or blackberry gelatin. Boil the tomatoes 10 minutes, add sugar and boil again, add gelatin and boil again, then let stand off heat 5 minutes, skim foam, ladle into jars, and give them a 5-minute water bath. Tried this recipe? Mention @Budget101com or tag #Budget101
📝 Printable Recipe Card
Green Tomato Magic Jam
Ingredients
- 2 ½ cups green tomatoes, shredded/finely chopped about 3 medium
- 1 ½ cups sugar
- 3 oz Raspberry gelatin 3 ounces raspberry Jello (Or Blackberry Jello, or Mixed Berry Jello)
Instructions
- In a large saucepan, bring shredded tomatoes and sugar to a boil. Reduce heat; simmer, uncovered, for 20 minutes over very low heat.2 ½ cups green tomatoes, shredded/finely chopped1 ½ cups sugar
- Remove from the heat; stir in gelatin until dissolved. Skim off any foam. Ladle into jars or freezer containers, leaving 1/2-in. headspace.3 oz Raspberry gelatin
- If freezing, Cool before covering with lids. Refrigerate.
- Yield: about 3 cups.
Recipe Size Alteration
💡 If you altered the ingredients above by doubling or tripling the recipe, you may also need to change the pan/dish size and adjust the cook time.
Notes
Other Flavor Ideas
This recipe is delicious with: Raspberry or Blackberry gelatin or Strawberry to make various flavors of jam. We have tried the mixed berry gelatin, and it received mixed reviews; only 3 out of 4 family members liked it. If you'd prefer less sugar, you can reduce it to 1 cup instead of 1 1/2 cups, particularly since jello is already very sweet on its own.Tried this recipe?
Let us know how it was!🛒 Walmart Grocery List
Want to know exactly what each batch costs down to the penny? Here’s how to calculate the real cost of a recipe (the same method used for the price breakdown above).
