Instructions

1. In a medium saucepan, whisk together the sugar, cornstarch and salt. Stir in water, lemon juice and blueberries.

2. Bring to a boil over medium-high heat, stirring frequently, until mixture begins to thicken.

3. Cook and stir for 2-3 minutes more. Remove from heat and stir in vanilla.

4. Serve warm or store in an airtight container in the refrigerator for up to one week.