Blackberry Crumble Bars: Easy Vegan Oat Bars (16 Squares)
These blackberry crumble bars are my favorite way to turn a bag of frozen berries into something that feels like a bakery treat. A buttery oat dough gets pressed into the pan for the crust, a thick layer of jammy blackberries goes on top, and the rest of the same dough is crumbled over everything….