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5 from 7 votes
Horizontal closeup photo of a diagonal row of jars of Blackberry Freezer Jam.
Easy Blackberry Freezer Jam
Prep Time
25 mins
Cook Time
3 mins
Total Time
28 mins

An easy, no-fail, super-delicious recipe for Blackberry Freezer Jam. Make it when sweet, ripe blackberries are in season and you'll be thanking yourself all year long!

Course: Jams, Jams & Jellies
Cuisine: American
Keyword: Blackberry Freezer Jam, Blackberry Jam, Easy Blackberry Jam
Servings: 80 1 tablespoon servings
Calories: 40 kcal
Author: Chris Scheuer
  • 2 cups prepared fruit purchase about 2-2¼ pints fully ripe blackberries
  • 4 cups sugar
  • 3 ounces Certo liquid pectin (one pouch) (there are two pouches in a box, you just need one)
  • 2 tablespoons fresh lemon juice
  1. Wash jars with hot water or run through the dishwasher and dry. Set aside. Measure the sugar into a medium-size bowl by scooping it up and leveling the top with a flat-sided knife. Set aside.

  2. Crush blackberries with a potato masher until no large pieces remain. If you prefer fewer seeds in your jam, press half of the crushed mixture through a fine sieve, pressing with the back of a large spoon until most of the juice has been extracted. Combine the juice with the crushed fruit.

  3. Measure EXACTLY 2 cups of prepared fruit into a large microwave-safe bowl. Add the sugar and stir well to combine.

  4. Place the blackberry mixture in the microwave on high power for 3 minutes, stirring well halfway through and at the end. Take a small taste of the jam after stirring. If there are still sugar crystals give it another 2-3 minute stint in the microwave.

  5. Combine the pectin and lemon juice in a small bowl and stir well to combine. Add the pectin mixture to the jam. Set a timer and stir for 3 minutes, continuously.

  6. Fill prepared containers to within ½ inch of the tops. Wipe off top edges of containers and cover with lids. Let the jam stand at room temperature for 24 hours to complete the set. Jam is now ready to use.

  7. Store in refrigerator for up to 3 weeks or freeze it for up to 1 year. Thaw in the refrigerator before using.

Recipe Notes

See Café tips above in the post for more detailed instructions and tips to ensure success.

Nutrition Facts
Easy Blackberry Freezer Jam
Amount Per Serving
Calories 40 Calories from Fat 9
% Daily Value*
Fat 1g2%
Saturated Fat 1g6%
Polyunsaturated Fat 1g
Monounsaturated Fat 1g
Sodium 1mg0%
Potassium 5mg0%
Carbohydrates 10g3%
Fiber 1g4%
Sugar 10g11%
Protein 1g2%
Vitamin A 1IU0%
Vitamin C 1mg1%
Calcium 1mg0%
Iron 1mg6%
* Percent Daily Values are based on a 2000 calorie diet.