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Blackberry pistachio dream bars with creamy berry-swirl filling, pistachio crust, and chopped pistachios

Blackberry Pistachio Dream Bars

These blackberry pistachio dream bars have a lightly nutty pistachio base, creamy Greek yogurt and cottage cheese filling, and a bright homemade blackberry swirl.
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Prep Time 25 minutes
Cook Time 35 minutes
Chill Time 4 hours
Total Time 4 hours
Servings: 12 bars
Course: Dessert
Cuisine: American
Ingredients Equipment Method Notes

Ingredients
  

For the Pistachio Base:
  • 1 cup shelled pistachios
  • 1 cup oat flour
  • 1/4 cup melted butter or coconut oil
  • 3 tablespoons maple syrup
  • 1/2 teaspoon vanilla extract
  • 1/4 teaspoon fine salt
For the Blackberry Swirl:
  • 1 1/2 cups fresh or frozen blackberries
  • 2 tablespoons maple syrup
  • 1 tablespoon lemon juice
  • 1 teaspoon cornstarch
  • 1 tablespoon water
For the Creamy Filling:
  • 1 cup plain Greek yogurt
  • 1 cup cottage cheese blended smooth
  • 2 large eggs
  • 1/3 cup maple syrup or preferred sweetener
  • 1 teaspoon vanilla extract
  • 2 tablespoons cornstarch
  • pinch of salt
For Topping:
  • 2 tablespoons chopped pistachios
  • fresh blackberries optional
  • white chocolate drizzle optional

Equipment

  • 1 8x8-inch baking pan
  • 1 Parchment paper
  • 1 food processor
  • 1 small saucepan
  • 1 mixing bowls
  • 1 Whisk
  • 1 rubber spatula
  • 1 measuring cups
  • 1 Measuring spoons
  • 1 cooling rack

Method
 

  1. Preheat the oven to 350°F and line an 8x8-inch baking pan with parchment paper.
  2. Add the pistachios to a food processor and pulse until finely ground.
  3. Add the oat flour, melted butter, maple syrup, vanilla, and salt, then process until a moist crumbly mixture forms.
  4. Press the pistachio mixture firmly and evenly into the bottom of the prepared pan.
  5. Bake the crust for 10 minutes, then remove it from the oven and let it cool slightly.
  6. Add the blackberries, maple syrup, and lemon juice to a small saucepan over medium heat.
  7. Mix the cornstarch with the water, add it to the berries, and cook until the mixture thickens into a glossy swirl. Set aside to cool.
  8. Blend the cottage cheese until completely smooth.
  9. Whisk or blend the cottage cheese, Greek yogurt, eggs, maple syrup, vanilla, cornstarch, and salt until creamy.
  10. Pour the creamy filling over the partially baked pistachio base.
  11. Spoon the blackberry mixture over the filling and gently swirl it with a knife or skewer.
  12. Sprinkle chopped pistachios over the top.
  13. Bake for 22 to 25 minutes, or until the edges are set and the center still has a slight wobble.
  14. Cool the bars completely at room temperature, then refrigerate for at least 4 hours.
  15. Lift the chilled dessert from the pan, slice into 12 bars, and add fresh blackberries or a white chocolate drizzle if desired.

Notes

Storage:
Store the chilled blackberry pistachio dream bars in an airtight container in the refrigerator for up to 5 days. Place parchment paper between layers if stacking.
Serving:
Serve the bars chilled for the cleanest slices and firmest creamy texture.
Freezing:
Freeze fully chilled bars in a freezer-safe container for up to 2 months. Thaw them overnight in the refrigerator before serving.
Recipe Notes:
Blend the cottage cheese completely smooth so the filling has a creamy cheesecake-like texture without visible curds.
Blackberry Tip:
Fresh or frozen blackberries both work. If using frozen berries, cook the swirl until the excess liquid has reduced and the mixture looks thick.
Slicing Tip:
Chill the bars fully and wipe the knife clean between cuts for neat dessert squares.
Texture Tip:
Do not overbake the filling. The center should still move slightly when the pan is gently shaken because it will continue setting as it cools.
Protein Note:
Exact protein will vary depending on the cottage cheese, Greek yogurt, pistachios, and serving size used.