Triple Berry Crumb Bars

A Gluten-Free Girl's Night-In Treat

Triple Berry Crumb Bars is a sweet and easy gluten-free dessert recipe that’s packed with fresh, juicy berries. Made with fridge and pantry staples, this recipe comes together in minutes.

 I made these as a sweet and easy Mother’s Day dessert idea but we’ll be baking them all season long as they’re packed with three of summer’s juiciest berries: blueberries, raspberries, and blackberries. The fresh berries area sandwiched between a simple crumb mixture that acts as both the crust and crumb topping. I am completely attached to each berry in this recipe, by the way, as you can truly taste them all individually!

How to Make Triple Berry Crumb Bars:

Start with a near bushel of fresh berries – you’ll need 1 pint blueberries plus 6oz each blackberries and raspberries. 

Add the berries to a bowl then gently stir together with 1/2 cup white sugar and 1 heaping Tablespoon gluten-free flour. Set the berries aside.

In a large bowl, stir together 1/2 cup each white and brown sugar, 1 teaspoon each baking powder and cinnamon, 1/4 teaspoon salt, and 3 cups gluten-free flour. Again, I used King Arthur Gluten-Free Measure for Measure flour but no matter which blend you use be sure it includes a binder, versus a plain gluten-free flour like almond flour, coconut flour, etc.

Add 1 cup (2 sticks) cold butter or vegan butter cut into cubes plus 1 large egg whisked with 1 teaspoon vanilla then stir to incorporate the egg. Switch to a pastry cutter or your fingers then start crumbling the mixture until only small pieces of butter remain. You could probably do this by pulsing in a food processor too.

Scoop a little more than half the mixture into a nonstick-sprayed 9×13″ baking dish then press down firmly with your hands or the back of a measuring cup to form the crust.

Spread the berry mixture on top, then squeeze handfuls of the remaining crumb mixture in your hands to make big clumps and crumble evenly over the berries. Last stop – oven! Bake for 38-40 minutes at 375 degrees, or until the topping is light golden brown, rotating the pan 180 degrees halfway through.

Let the bars cool completely before slicing into squares and devouring. It’s tempting to eat these bars warm but truly they get better and better as they sit, cool and slightly soften. YUM!!! Think I’ll go snag a square right now. ;) Hope you love this sweet and easy berry-packed recipe – enjoy!



  • 3 cups + 1 heaping Tablespoon gluten-free “measure for measure” or “all-purpose" flour, divided (could use regular all-purpose flour if you don’t need to eat GF)
  • 1 cup white sugar, divided
  • 1/2 cup brown sugar
  • 1 teaspoon baking powder
  • 1 teaspoon cinnamon
  • 1/4 teaspoon salt
  • 1 cup (2 sticks) cold butter or vegan butter, cubed
  • 1 large egg
  • 1 teaspoon vanilla
  • 1 pint blueberries
  • 6oz raspberries
  • 6oz blackberries


  1. Preheat oven to 375 degrees then spray a 9x13” baking pan with nonstick spray and set aside.
  2. In a medium-sized bowl add berries, 1/2 cup white sugar and heaping Tablespoon gluten-free flour then gently stir to combine and set aside.
  3. In a large bowl, stir together remaining 3 cups gluten-free flour, remaining 1/2 cup white sugar, brown sugar, baking powder, cinnamon, and salt. Whisk egg and vanilla together in a small dish then drizzle over the flour mixture and add cubed butter. Use a fork to stir everything together then switch to a pastry cutter or use your fingers to blend until small crumbles of butter remain. Scoop a little more then half the crumb mixture into prepared pan then firmly press into an even layer. Pour berries over crust then spread into an even layer. Squeeze handfuls of remaining crumble into clumps with your hands then crumble evenly over berries.
  4. Bake for 38-40 minutes or until crumble topping is light golden brown, rotating baking pan 180 degrees halfway through. Check on bars at the halfway mark then place a piece of foil on top if crumble topping is browning too quickly. Uncover for the last 8-10 mins to let crumble get golden brown. Cool bars completely before cutting into small squares and serving. Bars soften as they sit (and get better, in my opinion!) so store in the refrigerator if not eaten within 24 hours.

Adapted from

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