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Easy Overnight Rhubarb Chia Seed Jam Recipe for Perfect Sourdough Toast

overnight rhubarb chia seed jam - featured image

A quick and easy overnight rhubarb chia seed jam that is tangy, sweet, and perfect for spreading on sourdough toast. This jam uses simple ingredients and requires minimal hands-on time.

Ingredients

Scale
  • 4 cups fresh rhubarb stalks, chopped (about 600g or 1.3 lbs)
  • 1/4 cup maple syrup or honey (60ml)
  • 3 tablespoons chia seeds (30g)
  • 2 tablespoons freshly squeezed lemon juice
  • 1 teaspoon vanilla extract (optional)
  • 1/2 cup water (120ml)

Instructions

  1. Chop the rhubarb: Wash and trim about 4 cups (600g) of fresh rhubarb stalks, then chop into 1/2-inch pieces.
  2. Cook the rhubarb: Place the chopped rhubarb into a medium saucepan with 1/2 cup (120ml) water. Cook over medium heat for about 10 minutes, stirring occasionally, until the rhubarb softens but still holds some shape.
  3. Add sweetener and lemon: Stir in 1/4 cup (60ml) maple syrup or honey and 2 tablespoons freshly squeezed lemon juice. Continue cooking for 2-3 minutes.
  4. Remove from heat & add vanilla: Take the pan off the stove and stir in 1 teaspoon vanilla extract if using. Let the mixture cool for about 10 minutes.
  5. Mix in chia seeds: Transfer the rhubarb mixture to a bowl and stir in 3 tablespoons (30g) chia seeds thoroughly.
  6. Let it rest overnight: Cover the bowl with plastic wrap or a lid and refrigerate for at least 6 hours or overnight.
  7. Check consistency & adjust: In the morning, check the jam’s thickness. If too thick, stir in a tablespoon of water or lemon juice. If too runny, add a teaspoon of chia seeds and let rest 30 minutes more.
  8. Serve on toasted sourdough: Toast thick slices of sourdough bread until golden and crisp. Spoon the jam generously on top and enjoy!

Notes

Let the rhubarb mixture cool before adding chia seeds to avoid clumping. Stir frequently while cooking rhubarb to prevent burning. Jam can be ready in 2 hours at room temperature but thickens best overnight. Store in airtight container in fridge up to 7 days or freeze up to 3 months.

Nutrition

Keywords: rhubarb jam, chia seed jam, overnight jam, sourdough toast, easy jam recipe, vegan jam, gluten-free jam, natural sweetener