6 tbsp blueberry jam
2 tbsp lemon juice
2 tbsp water
2 tsp cornstarch
1 tsp grated lemon peel
1 cup blueberries (fresh or frozen)
Heat jam and lemon juice in saucepan over low heat.
Stir together water and cornstarch, then add to jam mixture.
Cook until lightly thickened.
Let cool.
Stir in lemon peel and blueberries.
Serve over cheesecake.