Be still my heart, these blackberry pie bars are everything! Let me count the ways: rich and buttery crumbs envelop a sweet and jammy blackberry filling. With plenty of butter, lemon zest, and vine ripened blackberries, these bars are the very essence of blackberry pie, albeit in an all too effortless crumb bar.
These blissful bars will be on repeat for what remains of summer, the epitome of everything I love about the season: carefree, breezy, simple, and oh so delicious.
- 3/4 cup unsalted butter, melted
- 1/2 cup sugar
- 1/4 cup light brown sugar
- 1 tsp vanilla
- 1 tsp lemon zest
- 2 cups flour
- 1/4 tsp baking soda
- 1/4 tsp salt
- 1/4 tsp cinnamon
- 1/3 cup sugar
- pinch of salt
- 1 1/2 Tbsp arrowroot starch
- 1 1/2 cups blackberries, halved or quartered
- 1/2 tsp lemon zest
- 1 tsp lemon juice
- Preheat oven to 350°F and line an 8-inch square baking pan with parchment paper. Whisk together melted butter, sugar, brown sugar, vanilla, and lemon zest until combined.
- Whisk together flour, baking soda, salt, and cinnamon in a medium bowl; add to butter mixture and fold in until incorporated. Reserve 1/2 cup of dough for topping (keep chilled); press remaining dough evenly into bottom of prepared pan. Bake crust for 14 to 16 minutes, until lightly golden and set. Transfer to a wire rack and cool for 15 minutes.
- For the filling, combine sugar, salt, and arrowroot starch in a medium bowl. Add blackberries, lemon zest, and juice, tossing gently to combine. Spoon mixture over cooled crust and crumble reserved dough over filling. Bake for another 40 minutes, until topping is golden and filling slightly bubbly. Cool completely in pan on a wire rack. Just before cutting, chill in the freezer for 10 minutes. Carefully lift parchment and place bars on a cutting board; cut into squares with a sharp knife.