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marionberry jam made with frozen berries

Marionberry Jam Recipe without Pectin | No Sugar Vegan Jam

Summer Yule
This marionberry jam recipe has a rich flavor and gorgeous purple color. You'll want to put this no sugar vegan jam on EVERYTHING. So good!
5 from 2 votes
Prep Time 5 mins
Cook Time 10 mins
Chill time 8 hrs
Total Time 8 hrs 15 mins
Course Slow Food DIY
Cuisine American
Servings 6
Calories 44 kcal


  • 2 cups frozen marionberries
  • 1 tablespoon orange juice (freshly squeezed)
  • 2 tablespoons chia seeds


  • Put the frozen blackberries in a medium saucepan over medium heat on the stovetop. Heat the fruit for 5-10 minutes, allowing it to break down. Give it a stir occasionally.
  • While the berries are heating, squeeze the juice from half of an orange. You'll need one tablespoon of juice for this recipe.
  • After cooking the marionberries, take them off the heat. Mash the berries to the desired consistency with a potato masher or a fork. I like to make my jam pretty smooth; there will still be plenty of texture from the seeds.
  • After mashing, stir in the fresh orange juice and then stir in the chia seeds. Let your jam stand until it has cooled and thickened. Then put the jam into a glass jar (or jars) and refrigerate it overnight.
  • In the morning, you'll be ready to use your fresh Oregon marionberry jam! Any jam that you will not use in 3-4 days should be stored in a freezer-safe container in the freezer.


This is a level 1 recipe (may help support fat loss). Berries are a low-calorie food that fit most of the dietary patterns that are used for weight loss. (This includes low carb and keto diets.) You can use this no sugar vegan jam as an easy way to add fruit to a variety of dishes.
How well this food ultimately fits if you are looking to lose weight depends on what it is served with. Try putting it on high-protein, low-fat Greek yogurt for a lower calorie, satiating dish.
For a higher energy (i.e., higher-calorie) meal, you could serve this jam in a sandwich that is thickly spread with nut butter. Use whole grain bread for a higher fiber meal.
If you are accustomed to foods being heavily sweetened, this sugar free marionberry jam may not be sweet enough for you. In this case, you could add your favorite non-nutritive sweetener to the recipe.
You could also add a sweetener like maple syrup or honey to this jam. However, please keep in mind that using a sweetener will alter the nutritional information for the recipe.
Added sugars, including natural sweeteners like honey and maple syrup, pack a lot of calories into a small volume. IMVHO, it is better to skip the additional sweeteners and become accustomed to the more subtle natural sweetness that fruits provide.
Nutrition information is for one serving of the recipe.


Calories: 44kcalCarbohydrates: 8.9gProtein: 1.4gFat: 1.3gSaturated Fat: 0.2gPotassium: 35.2mgFiber: 2.3gVitamin A: 0.8% DVVitamin C: 4.2% DVCalcium: 3.2% DVIron: 3.7% DV
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