BLUEBERRY DUMP CAKE
For the filling: mix blueberries with sugar and cornstarch.
Add lemon zest.
Add fresh lemon juice (or water) and mix.
For the topping: mix cake mix with melted butter until crumbly.
Top the blueberries with this mixture.
Spread with a spoon; the topping won't cover the blueberries completely.
Bake for 40-45 minutes until golden.
Serve plain with additional fresh berries and/or ice cream and whipped cream.