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overhead view of unsliced berry crumble bars in pan

Mixed Berry Crumble Bars

Berry Crumble Bars make the perfect dessert, snack or even special breakfast treat. This casual pastry-meets-cookie bar works great year round with frozen berries, or make it in the summer with fresh. Paleo, Gluten-free and Vegan.
Course Dessert, Snack
Cuisine American
Keyword berry, crumble bars, gluten-free, mixed berry, paleo, vegan
Prep Time 20 minutes
Cook Time 30 minutes
Total Time 50 minutes
Servings 9 bars
Calories 278kcal
Author Megan
Cost $6


  • quarter size sheet pan OR 9" x 13" baking dish
  • electric handheld mixer (optional)
  • oven


Berry Filling

  • 10 ounces mixed berries or 2-1/2 cups; I use Cascadian Farms frozen Harvest Berries blend
  • 1 Tablespoon maple syrup
  • 1 Tablespoon tapioca flour
  • pinch sea salt


  • Preheat oven to 350°. Line quarter size sheet pan OR 9" x 13" baking dish with parchment paper. Set aside.
  • In a medium size bowl, combine dry ingredients: almond flour, tapioca flour, coconut flour, maple sugar, baking powder, baking soda and sea salt. Add maple syrup and coconut oil. Use electric hand held mixer, or stir together by hand, until well mixed.
    making crumble bar dough process photo in bowl
  • Press 3/4 of the mixture (reserving 1/4 for the topping) into the bottom of the prepared pan. (You don't need to press it up the sides at all.) Bake for 10 minutes, until golden brown all over.
    baked dough process photo
  • Gather the filling ingredients. Make the filling while the base is baking.

Berries Filling

  • In a medium size saucepan, stir together berries, maple syrup, tapioca flour and sea salt. Cook over medium heat, stirring constantly, until thickened, about 6 minutes. (The liquid amidst the berries may thicken first, but if you're using frozen berries, continue to cook for the full 6 minutes, to be sure they're heated through/have released their watery juices.) Break up or cut any large strawberries as they melt (if frozen). Set aside.
    berry filling in pot process photo
  • Remove bar base from the oven. Pour the berry filling onto the base, and spread it out evenly.
    berry filling poured onto base after initial baking process photo
  • Crumble the topping mixture evenly over the berries.
    crumble topping crumbled over the berry filling before baking process photo
  • Bake for 10 additional minutes, or until golden brown all over. Allow to cool. Then chill for 2 hours minimum before removing from the pan and cutting into squares. Serve chilled.
    baked bars chilled and cut into squares to serve
  • Add ice cream if you want to dress it up.
    ice cream scoop on berry crumble bars


Calories: 278kcal | Carbohydrates: 21g | Protein: 6g | Fat: 21g | Saturated Fat: 8g | Sodium: 71mg | Potassium: 25mg | Fiber: 4g | Sugar: 12g | Vitamin A: 17IU | Vitamin C: 1mg | Calcium: 58mg | Iron: 1mg