Easy Blueberry Jam

Easy Blueberry Jam turns a simple bowl of berries into a glossy, fruit-forward spread without packaged pectin. It has a soft, spoonable set, tender blueberry pieces, and just enough lemon to keep every bite bright. A small touch of mild honey rounds out the flavor, while vanilla and sea salt make the berries taste even fuller without taking over.

The method is designed for reliable results at home. Most of the berries cook down into a rich base, then a reserved handful goes in later for a fresh, chunky texture. A chilled-plate test removes the guesswork, so you will know exactly when to stop cooking. Spread this homemade blueberry jam over toast, biscuits, or warm scones. It is also lovely swirled into yogurt, spooned over cheesecake, or tucked into a simple peanut butter sandwich. Sometimes the smallest batch becomes the jar everyone keeps reaching for.

Recipe Yield: About 1 1/2 cups (24 servings)

INGREDIENTS

4 cups fresh or frozen blueberries (20 oz), divided
1 cup granulated sugar
2 tbsp mild honey
2 tbsp fresh lemon juice
1 tsp finely grated lemon zest
1/8 tsp fine sea salt
1/2 tsp vanilla bean paste or pure vanilla extract

INSTRUCTIONS

1. Prepare the berries:
Place a small plate in the freezer for testing the jam. Reserve 1 cup of blueberries, then add the remaining berries to a wide, heavy-bottomed saucepan.

2. Macerate the fruit:
Add the sugar, honey, lemon juice, lemon zest, and salt. Lightly crush some of the berries, stir well, and let the mixture stand for 10 minutes.

3. Build the jam base:
Cook over medium heat for 6 to 8 minutes, stirring frequently, until the sugar dissolves and the berries release plenty of juice. Mash the softened berries to your preferred texture.

4. Add the remaining berries:
Stir in the reserved blueberries. Increase the heat to medium-high and bring the mixture to a full boil. Then, adjust the heat to maintain a lively boil.

5. Cook until set:
Cook for 10 to 14 minutes, stirring frequently and scraping the bottom as the jam thickens. Reduce the heat slightly if it begins to splatter or stick.

6. Test the jam:
Remove the saucepan from the heat. Spoon a small amount onto the chilled plate and wait 30 seconds. Push through it with your finger. The jam is ready when it wrinkles slightly and the path stays open. If it runs back together, boil for 2 more minutes and test again.

7. Finish the jam:
Stir in the vanilla. Let the jam rest for 5 minutes, then stir once to redistribute the blueberry pieces. Transfer it to clean, heat-safe jars.

8. Cool and chill:
Let the jam cool completely before covering. Refrigerate for at least 4 hours for the best set, then store in the refrigerator for up to 2 weeks.

Helpful Tips to Perfect This Recipe

• Use a wide saucepan: More surface area allows moisture to evaporate efficiently, helping the blueberry jam thicken without dulling its fresh fruit flavor.
• Trust the chilled-plate test: The jam will still look slightly loose while hot. For another check, it should reach about 220°F at sea level; subtract 2°F for every 1,000 feet of elevation.
• Handle frozen berries correctly: Thaw frozen blueberries and include all their juices. They may require an additional 2 to 4 minutes of cooking.
• Avoid doubling the batch: A larger batch evaporates more slowly and can set unevenly. Cook separate batches for the most reliable texture.
• Keep it refrigerated: This is a refrigerator or freezer jam, not a tested water-bath canning recipe. Freeze it in a suitable container for up to 3 months.