These blueberry crumb cake bars are a delicious and easy-to-make treat. The crust and crumb topping are made in a food processor, with flour, sugar, butter, and cinnamon, mixed until it forms coarse crumbs. The blueberry filling is made with fresh or frozen blueberries, sugar, cornstarch, and lemon juice. The crust is pressed into a baking dish, the blueberry filling is poured over it, and the crumb topping is sprinkled on top. The bars are baked until golden brown and the filling is bubbly. These bars are perfect for a dessert or a snack.
