Spring Sweetness: Just 4 ingredients. The perfect excuse to turn on the slow cooker instead of the oven.

then smooth it back into an even layer.
Using a spoon or small scoop, drop the batter in 8 to 10 mounds over the hot blueberry mixture, spacing them slightly apart. The mounds will spread a bit and puff as they cook, creating a rustic, biscuit-like topping that is partly submerged in the sauce.
Biscuit batter dropped over bubbling blueberries
Biscuit batter dropped over bubbling blueberries
Cover the slow cooker again, placing a clean kitchen towel or a double layer of paper towels under the lid if possible to catch condensation and help the tops of