Ingredients
Equipment
Method
Step-by-Step Instructions
- Preheat your oven to 350°F (175°C) and line an 8x8-inch baking dish with parchment paper.
- In a large mixing bowl, combine flour, oats, brown sugar, salt, and baking powder until well blended.
- Melt the butter and stir in vanilla extract. Mix into the dry ingredients until crumbly.
- Press two-thirds of the mixture into the bottom of the baking dish.
- Toss the blackberries with granulated sugar and lemon juice in a separate bowl.
- Spread the blackberry mixture evenly over the crust in the baking dish.
- Sprinkle reserved crust mixture over the filling and top with chopped pistachios.
- Bake for 30-35 minutes until golden and bubbly.
- Cool for at least an hour before slicing into squares.
- Dust with powdered sugar if desired before serving.
Nutrition
Notes
For an extra touch, serve warm for a gooey treat or chilled for a firmer bite. Adjust sugar based on berry ripeness for flavor balance.
