Using a large mixing bowl, add flour, sugar, baking powder, ginger and salt; stir until well combined.
Add blueberries; toss until well combined.
Add cream; gently stir until well combined.
Turn dough out onto a floured cutting board. Press dough into a rough square and then fold over. Turn dough a quarter turn and repeat process 3-4 times, pressing dough out gently after each turn.
Transfer dough to a parchment-lined baking sheet.
Using a pizza cutter, cut dough into 12 biscuits. (Note: Do not separate biscuits after cutting them apart. Just cut through the dough at this step.)
Bake for 16-18 minutes, or until tops of biscuits are golden brown.
Cut or pull apart biscuits and serve with blueberry sauce (recipe below).
For the Blueberry Sauce
Using a medium saucepan, add 1 cup of blueberries, sugar, 4 tablespoons of water and lemon juice; stir until well combined.
Place over medium heat and bring to a low boil, stirring often.
Using a small bowl, whisk together the cornstarch with remaining tablespoon of water. Slowly pour this mixture into the saucepan, stirring while you pour.
Continue simmering for 2-3 minutes, or until the sauce thickens noticeably.
Remove sauce from heat and stir in vanilla extract and remaining cup of blueberries.