Made with a buttery shortbread cookie base, a creamy, sweet blueberry filling, and a delicious crumb topping, these Blueberry Bars are a perfect treat.
Combine flour, sugar, and salt. Mix in the butter. Reserve half a cup of the mixture for later. With the remaining batter, press it into the glass baking dish. Bake.
Mix sour cream, sugar, vanilla, and egg. Fold in blueberries. Pour the batter over the crust. Sprinkle the reserved crust batter over the berry mixture.