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Classic Blueberry Jam

A spoonful of glistening homemade blueberry jam being lifted from a glass jar.

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A simple recipe for homemade blueberry jam, perfect for canning or enjoying fresh. This small-batch recipe can be made with or without pectin and includes a hint of vanilla and lemon.

Ingredients

Scale
  • 4 cups fresh or frozen blueberries
  • 2 cups granulated sugar (adjust to taste for low-sugar option)
  • 1/4 cup lemon juice
  • 1 teaspoon vanilla extract
  • Optional: 1/4 cup pectin (if using for a firmer set)

Instructions

  1. Combine blueberries, sugar, and lemon juice in a large pot.
  2. If using pectin, stir it in now.
  3. Cook over medium-high heat, stirring constantly, until the mixture comes to a rolling boil that cannot be stirred down.
  4. Boil for 1 minute, stirring constantly.
  5. Remove from heat and stir in the vanilla extract.
  6. Skim off any foam from the surface.
  7. If canning, ladle hot jam into sterilized jars, leaving 1/4 inch headspace. Process in a water bath canner according to manufacturer’s instructions.
  8. If not canning, let cool completely, then store in the refrigerator.

Notes

  • For a low-sugar jam, use a sugar substitute or reduce the sugar to 1 cup. The jam may be softer.
  • This recipe makes approximately 3-4 half-pint jars.
  • Ensure your jars and lids are properly sterilized if canning.

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