Easy Blackberry Freezer Jam

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This easy blackberry freezer jam recipe is the perfect recipe for blackberry season! Made with simple ingredients and minimal cooking, it tastes like biting into a fresh blackberry!

Spoon dipping into a jar of blackberry freezer jam

This Easy Freezer Jam Recipe Might Surprise You

Summer is the perfect time for making homemade blackberry jam, and this freezer jam is the EASIEST type of jam to make!

  • EASE. Just 4-5 ingredients & 30 minutes of hands-on time are all you need! If you can mash, stir, and scoop, you can make this homemade jam recipe. No hot water bath canning or special equipment required!
  • FLAVORS. One of the great things about freezer jam recipes is that there’s minimal cooking, so the fresh fruit flavor really shines through. This jam tastes like sweet, tangy, ripe blackberries!
  • TOP TIPS. Measure precisely and use a timer. There’s nothing difficult in this recipe, but being precise does matter. Set a timer, measure carefully, and you’ll be good to go!

Happy baking! xo, Emily

Gather Your Ingredients

If you’ve made our Strawberry Freezer Jam, Raspberry Freezer Jam, or Peach Freezer Jam recipes, you’ll notice a very familiar list of ingredients. Here’s what you’ll need for this easy recipe:

Ingredients for blackberry freezer jam
  • Blackberries. You can use fresh blackberries (my preference) or thawed frozen blackberries (a great option in the winter!) to make this jam. Keep in mind that the quality of your jam will reflect the quality of your blackberries. If you use sad berries, you’ll have sad jam. You’ll need about 8 cups of good-quality fresh blackberries!
  • Granulated Sugar. It’s going to seem like a lot of sugar for a low sugar blackberry jam recipe, but TRUST ME. The sugar is there for flavor, yes, but more importantly, it’s essential to the consistency. You cannot reduce the sugar in this recipe or it will not set up properly. (To put it in perspective, traditional blackberry freezer jam uses 4-6 cups of sugar compared to our 3 cups.)
  • Low-Sugar Pectin. You MUST use a low-sugar pectin for this jam to set up properly. I use Sure Jell Low Sugar No Sugar Pectin (PINK box not yellow box!!) and have consistent results every time. I haven’t tested this recipe with liquid pectin. 
  • Water. You’ll only need 1 cup of water for this jam recipe, to help dissolve the sugar and pectin.
  • *Maybe* Some Fresh Lemon Juice or Lime Juice. If your berries taste a bit flat, you can brighten them up with 1 Tablespoon of fresh lemon juice or fresh lime juice. It’s not strictly necessary, though!
  • Jars & Lids! Then, for storing, you’ll need SUPER clean jars, with a tight-fitting lid for each. You’ll get about 6 cups of delicious homemade jam from this simple recipe, and you can store it in pint jars, 10-ounce jars, half pint jars, or whatever size you have!ย Look for freezer-safe glass (tempered glass) or plastic freezer jam jars.

How To Make Blackberry Freezer Jam, Step By Step

As always, you can find the full recipe, with ingredient amounts, detailed instructions, and tips in the recipe card below.

Making blackberry freezer jam, step by step
  1. Prep Your Station. Before you start, make sure you have very clean jars and lids, a funnel, a ladle (or clean measuring cup for scooping), and all your ingredients ready to go. This recipe depends on timing, and moves quickly once you get started.
  2. Make Sure You Have The Right Pectin. This recipe will ONLY work with a low sugar pectin. We recommend Sure Jell Premium Fruit Pectin for Less or No Sugar Needed Recipes (pink box).
  3. Mash, Strain & Measure The Blackberries. Next, use a potato masher (best) or fork to crush the blackberries in a large bowl. If desired, press about 1/3 of the mashed fruit through a fine-mesh sieve to remove the seeds and pulp. Measure the mashed blackberries to make sure you have EXACTLY 4 cups. (No more, no less.)
  4. Boil The Pectin Mixture. In a large saucepan, combine sugar, low sugar pectin, and water. Bring the mixture to a boil over medium high heat, stirring constantly until the mixture comes to a boil, with bubbles all across the surface. Boil 1 minute (use a timer!) then remove from the heat.
  5. Stir In The Mashed Blackberries. Add the crushed berries (and lemon juice, if using) to the saucepan and stir thoroughly for another full minute (set a timer!) to fully incorporate the pectin mixture and blackberry mixture. Make sure to mix well, so the jam sets up evenly! 
  6. Scoop Into Jars & Set. As soon as possible, scoop the jam into the clean jars, leaving 1/2-inch of space at the top for the jam to expand in the freezer. Wipe the rims of the jars and cover with clean lids.
  7. Set 24 Hours, Then Chill or Freeze. Let the jam rest at room temperature for 24 hours. Try not to jiggle or jostle the jars during this time. Just let them set! After 24 hours, transfer the jars to the freezer for up to 1 year, or the fridge for up to 3 weeks. Thaw frozen jam in the refrigerator before using and use within 3 weeks once opened.
Spoon scooping blackberry freezer jam out of the jar
Spreading blackberry freezer jam on a slice of toast

Yummy Ways To Use This Jam

The best part of jam season is all the fun ways to eat it!ย This delicious blackberry jam doesn’t get as much attention as classic strawberry jam or raspberry jam, but it has SO MANY delicious uses!

  • Bread, Biscuits, Scones & Toast. I have to start with the obvious, but I’m telling you that blackberry jam on a slice of buttered toast is one of the best things you’ll eat all year.
  • Sandwiches. Change up a classic PB&J by adding blackberry jam, or add a touch of elegance to a panini with gruyere cheese, some ham or prosciutto, some of this delicious jam, and a little peppery arugula!
  • Cheese & Crackers. Similarly, some sharp cheddar (or Trader Joe’s Unexpected Cheddar!) on some crackers with a little blackberry jam is heaven.
  • Appetizers. This is a great recipe for using on appetizers. Baked brie, crostini, whipped feta, puff pastry bites, and pinwheels all taste great with blackberry jam!
  • Savory Dishes. Think blackberry BBQ sauce, blackberry glazed pork chops, glazed meatballs, and even salad dressings! The beautiful color & sweet, tangy flavor makes this jam a great pairing for savory recipes.
  • Ice Cream. Blackberry freezer jam tastes amazing spooned over a scoop of vanilla, lemon, or mixed berry ice cream!
Spoon scooping blackberry freezer jam out of the jar

FAQ + Tricks For The Best Blackberry Freezer Jam

Can I Use a Sugar Substitute? Sugar alternatives, like Swerve or stevia typically need a pectin specifically formulated to work with them, or a modified technique to activate properly. I don’t recommend them for my recipe.

Make Sure You Have The Right Pectin. This blackberry freezer jam recipe will ONLY work with a low sugar pectin. We recommend Sure Jell Premium Fruit Pectin for Less Sugar or No Sugar Needed Recipes (pink box). Be sure to use the full amount of sugar called for, or the pectin won’t set up properly!

Can I Make Seedless Jam? Absolutely. For seedless blackberry jam, you’ll just likely need more berries (10-12 cups) to reach 4 cups of mashed berries, since straining removes some of the pulp and seeds.

How Long Does Blackberry Freezer Jam Last? This blackberry freezer jam will stay fresh for about a year in the freezer, and 2-3 weeks once opened in the fridge.

More Yummy Jams & Spreads To Try

homemade lemon curd in a jar

Easy Homemade Lemon Curd

๐ŸŒŸ Did You Make This Recipe?

Tell me all about it! Leave a star rating below when you try our low sugar Blackberry Freezer Jam recipe. I can’t wait to hear how it goes!

Spoon dipping into a jar of blackberry freezer jam

Blackberry Freezer Jam (Low Sugar Recipe!)

No ratings yet
Author: Emily Dixon, Sweets & Thank You
Prep Time: 25 minutes
Cook Time: 15 minutes
Total Time: 40 minutes
Print Pin Rate
Servings: 6 cups jam

Ingredients

Instructions

  • Prep Your Station. Before you start, make sure you have very clean jars and lids, a funnel, a ladle (or clean measuring cup for scooping), and all your ingredients ready to go. This recipe depends on timing, and moves quickly once you get started.
  • Make Sure You Have The Right Pectin. This recipe will ONLY work with a low sugar pectin. We recommend Sure Jell Premium Fruit Pectin for Less or No Sugar Needed Recipes (pink box).
  • Mash, Strain & Measure The Blackberries. Next, use a potato masher (best) or fork to crush the blackberries in a large bowl. If desired, press about 1/3 of the mashed fruit through a fine-mesh sieve to remove the seeds and pulp. Measure the mashed blackberries to make sure you have EXACTLY 4 cups. (No more, no less.)
  • Boil The Pectin Mixture. In a large saucepan, combine sugar, low sugar pectin, and water. Bring the mixture to a boil over medium high heat, stirring constantly until the mixture comes to a boil, with bubbles all across the surface. Boil 1 minute (use a timer!) then remove from the heat.
  • Stir In The Mashed Blackberries. Add the crushed berries (and lemon juice, if using) to the saucepan and stir thoroughly for another full minute (set a timer!) to fully incorporate the pectin mixture and blackberry mixture. Make sure to mix well, so the jam sets up evenly!
  • Scoop Into Jars & Set. As soon as possible, scoop the jam into the clean jars, leaving 1/2-inch of space at the top for the jam to expand in the freezer. Wipe the rims of the jars and cover with clean lids.
  • Set 24 Hours, Then Chill or Freeze. Let the jam rest at room temperature for 24 hours. Try not to jiggle or jostle the jars during this time. Just let them set! After 24 hours, transfer the jars to the freezer for up to 1 year, or the fridge for up to 3 weeks. Thaw frozen jam in the refrigerator before using and use within 3 weeks once opened.

Notes

  • **Make sure you’re using pectin for less sugar or no-sugar recipes. Traditional pectin (yellow box, for Sure Jell) will not work in this recipe, as the ingredients in this recipe are formulated for less sugar.
  • For Seedless Jam:ย For seedless blackberry jam, you’ll just likely need more berries (10-12 cups) to reach 4 cups of mashed berries, since straining removes some of the pulp and seeds.

Video

Course: Condiment
Cuisine: American
Diet: Gluten Free
Keyword: Freezer Jam

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