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Easy Refrigerator Peach Blueberry Jam

Who says jam making has to be time-consuming? This Peach Blueberry Jam is a quick, simple, easy refrigerator jam perfect for summertime.

Peach Blueberry Jam

Making fresh homemade jam is one of those summer things. Fruit that’s been ripened in the sun and picked at its ripest makes the best jams.

In years past, I’ve made and canned fresh jams with just-picked berries — both from our local strawberry pick-your-own patch and from my neighbor’s black raspberry bushes. But this year we didn’t even make it to the strawberry fields. I haven’t seen any black raspberries. And it’s just been too hot for big batches of anything.

Fortunately, homemade jam is still happening here. And I learned what could be one of the most valuable lessons about jam making ever: it doesn’t have to be complicated. In fact, jam-making can even be easy. That’s the case with this Easy Refrigerator Peach Blueberry Jam.

This method was a happy accident that I discovered when a sauce I was making thickened up suddenly. Sometimes when food doesn’t behave like you think it will, the happiest kitchen accidents happen. Using cornstarch allows the fruit to gel into a thick, spreadable jam that’s so simple to make.

Making Peach Blueberry Jam

This simple refrigerator jam starts with juicy, fresh peaches and sweet, ripe blueberries. You mix them up with sugar and cornstarch and a little salt. Then you let them sit. Seriously, walk away and let the mixture just mingle and do its thing. The peaches will release their juices and it will become almost creamy.

Then you cook that mixture on the stove. The peaches will fall apart. The blueberries will burst. Magic happens while you sit there and stir. Before you know it, the mixture will be thick and ready to be stored in glass containers.

Peach Blueberry Jam on Biscuits

This jam is mildly sweet. The flavor is a comforting homage to warm summer days and relaxation. It’s amazing served on fresh homemade baking powder biscuits.

Juicy fresh peaches. Sweet, ripe blueberries. Lightly sweetened and perfectly set.

Yield: 1 1/2 cups

Easy Refrigerator Peach Blueberry Jam

Easy Refrigerator Peach Blueberry Jam
Prep Time 5 minutes
Cook Time 16 minutes
Total Time 21 minutes


  • 2 cups diced fresh peaches
  • 1 cup fresh blueberries
  • 1/4 cup granulated sugar
  • 2 tbsp cornstarch
  • 1/4 tsp salt


  1. Combine all ingredients in a large bowl and let rest for at least 30 minutes. Seriously, walk away. Let the fruits get all juicy before proceeding. No need to rush this one.
  2. Pour the fruit mixture into a small saucepan. Heat on medium, stirring constantly. When the blueberries begin to burst, use a potato masher to mash the fruit into submission. Continue cooking until the mixture is thickened -- about 14-16 minutes total cooking time.
  3. Transfer to glass jars. Cover and let cool before storing in the fridge.


Saturday 2nd of July 2022

This was great. I used all natural sugar and had to add a little water. Used a blender to mix it and it's amazing. Thanks.

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Barb Brower

Friday 20th of September 2013

If I used parafin wax while the jam is hot, would it be OK to store on the shelf instead of refrigerator?

Sarah W. Caron

Friday 20th of September 2013

Hi Barb, this recipe is not shelf stable -- it needs to be refrigerated. Thanks for the question!


Tuesday 17th of September 2013

If I can this jelly like you would a regular jam will it still need to be kept in the fridge or will it be shelf stable

Sarah W. Caron

Tuesday 17th of September 2013

Hi Karysa,

This jelly isn't intended for canning -- it should be refrigerated. Thanks for the question!


Friday 6th of September 2013

If I were to use blueberries I had frozen should I let them thaw first? Will it still turn out?

Sarah W. Caron

Tuesday 10th of September 2013

Yes, you can use frozen. I would partially thaw them first (leave them on the counter for maybe 15 minutes), but it should turn out just fine. Thanks for the question, Michelle!

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