Next time don't use all the brown sugar it calls for. Yum!! I make this crumble several times a week, and it always disappears within hours. You'll love how easy this blackberry crumble recipe is! #SundaySupper
Blackberry Crumble Bars - Easy blackberry crumble bars are perfect for dessert or a special treat to tuck into a lunchbox. A shortbread crust and sweet oatmeal crumble topping with an amazing blackberry filling.