Blackberry Pistachio Bars (Printable)
Buttery pistachio shortbread layered with blackberry filling and golden pistachio streusel—sweet-tart bars for sharing.
# What You’ll Need:
→ Pistachio Shortbread Base
01 - 1 cup shelled unsalted pistachios
02 - 1 1/3 cups all-purpose flour
03 - 1/2 cup granulated sugar
04 - 1/4 teaspoon salt
05 - 1/2 cup unsalted butter, cold and cubed
→ Blackberry Filling
06 - 2 cups fresh blackberries or thawed frozen blackberries
07 - 1/3 cup granulated sugar
08 - 1 tablespoon lemon juice
09 - 1 tablespoon cornstarch
→ Streusel Topping
10 - 1/2 cup all-purpose flour
11 - 1/4 cup rolled oats
12 - 1/3 cup brown sugar
13 - 1/4 cup unsalted butter, cold and cubed
14 - 1/3 cup shelled pistachios, roughly chopped
# How To Make It:
01 - Preheat oven to 350°F. Line an 8x8-inch baking pan with parchment paper, allowing overhang for easy removal.
02 - In a food processor, pulse pistachios until finely ground. Add flour, granulated sugar, and salt. Pulse to combine. Add cold, cubed butter and process just until the mixture becomes coarse crumbs. Evenly press the mixture firmly into the prepared pan.
03 - Bake the shortbread crust for 12 to 15 minutes, until set and lightly golden. Remove the pan from the oven and set aside.
04 - Combine blackberries, granulated sugar, lemon juice, and cornstarch in a mixing bowl. Lightly mash the berries to release some juices and blend the mixture.
05 - In a separate bowl, blend flour, rolled oats, brown sugar, and chopped pistachios. Add cold, cubed butter and work in with your fingertips until a crumbly texture forms.
06 - Spread blackberry filling evenly over the baked base. Distribute the streusel topping uniformly over the blackberry layer.
07 - Return the pan to the oven and bake for 20 to 22 minutes, or until the topping is golden brown and the fruit filling is bubbling.
08 - Allow bars to cool completely in the pan. Remove using the parchment paper overhang, transfer to a cutting board, cut into bars, and serve.
# Expert Tips:
01 -
- These bars balance the toasted richness of pistachios with just the right hit of juicy blackberry tang for an addictive bite.
- Cleanup is easy and the bars always look bakery-worthy, even if you’re just serving them on a mismatched plate.
02 -
- If you rush the cooling, the fruit layer will run and the bars won’t hold their shape—I learned this after cutting too soon in my impatience.
- Chilling the shortbread base before baking helps it stay extra crisp, especially on humid days.
03 -
- If using frozen berries, thaw and drain well to avoid soggy crust.
- Sprinkle a pinch of sea salt over the crumble before baking for a bakery-level finish.