Although summer has been slow here in Sweden, this week things finally changed. The weather has been lovely and perfect for picnics in the park, and what better treat to bring along than crumble bars bursting with summery berry flavors?!

Crumble pie brings back nostalgic summer memories from my childhood as that was pretty much the only thing my mother ever baked, and she tended to only bake things during summertime :P.

Blueberries are one of many ways to enjoy them, and you can of course swap them with other berries of your choice, but I love their sweet and tangy flavor.