You can use fresh or frozen blueberries. If using frozen, do not thaw before mixing to prevent the filling from becoming too watery.
For a crispier topping, you can sprinkle a little extra sugar over the biscuit mounds before baking.
This cobbler is best served fresh out of the oven but can be stored covered in the refrigerator for up to 3 days. Reheat in the oven or microwave before serving.
Substitute the milk with buttermilk for a slightly tangier, more tender crumb topping.