Step 1

Place blueberries, sugar and lemon juice in a large, heatproof, microwave-safe bowl.

Step 2

Microwave, uncovered, on high (100%) for 4 minutes, stirring every minute or until sugar has dissolved.

Step 3

Microwave, uncovered, on high (100%) for 17 to 18 minutes, stirring every 4 minutes or until jam has reached setting point (see tip). Set aside for 2 minutes for bubbles to subside. Carefully spoon into a hot sterilised jar (see note). Seal. Cool. Once opened, store in fridge for up to 1 month.