With just a handful of simple ingredients, blueberry peach jam delivers a burst of summer in every spoonful. Imagine the sweetness of ripe peaches dancing with the tangy brightness of blueberries, all kissed with a hint of cinnamon and vanilla. This homemade fruit jam is thick, glossy, and perfect for slathering on toast, swirling into yogurt, or gifting in pretty jars—because joy tastes even better when shared.
In a large pot, combine the blueberries, peaches, sugar, lemon juice, vanilla extract, and cinnamon. Stir well and let the mixture sit for 10 minutes to release the juices.
Place the pot over medium heat and bring the mixture to a gentle boil, stirring frequently to prevent sticking.
Once boiling, stir in the powdered pectin and continue cooking for 1-2 minutes, until the mixture thickens slightly.
Reduce the heat to low and simmer for 15-20 minutes, stirring occasionally, until the jam reaches your desired consistency.
To test the jam, place a small spoonful on a chilled plate—if it thickens as it cools, it’s ready.
Remove from heat and let the jam cool for 5 minutes before transferring to clean jars. Seal the jars and store in the refrigerator for up to 3 weeks, or process in a water bath for longer storage.
For a lower-sugar version, reduce the sugar by 1/4 cup and add an extra tablespoon of lemon juice to balance the sweetness. If your jam is too runny, simmer it 5 minutes longer. Too thick? Stir in a splash of water or peach juice.