Mix 1/2 cup sucanat and cornstarch in medium saucepan. 

Stir in blueberries and lemon juice.

Cook,  stirring constantly until mixture thickens and boils.

Boil and stir for 1 minute.

Pour mixture into ungreased 2-quart casserole dish.

Keep blueberry mixture hot in oven while preparing biscuit topping.M

Measure flour, baking powder, and salt into a bowl.

Add butter and milk

Cut in the butter and mix until dough holds together.

Drop dough by 6 spoonfuls over hot blueberry mixture.

Bake at 400 F for 25 to 30 minutes or until biscuit topping is golden brown.