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Vegan berry crumble bars with fresh berries and a crispy topping

Vegan Berry Crumble Bars

These Vegan Berry Crumble Bars combine a sturdy oat-and-flour crust with a juicy berry filling and a crumbly topping, making them a delightful fall dessert or brunch treat.
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Prep Time 20 minutes
Cook Time 37 minutes
Total Time 57 minutes
Course Dessert, Snack
Cuisine American, Vegan
Servings 12 bars
Calories 200 kcal

Ingredients
  

For the crust and crumble

  • 2 cups rolled oats Use gluten-free if needed
  • 1.75 cups all-purpose flour Or gluten-free 1:1 blend
  • 0.5 cups almond flour
  • 1 cups light brown sugar, packed
  • 1 tsp baking powder
  • 0.25 tsp salt
  • 0.75 cups coconut oil, melted Or vegan butter, cooled
  • 2 tsp vanilla extract

For the berry filling

  • 4 cups mixed berries Fresh or frozen; strawberries, raspberries, blueberries, blackberries
  • 0.5 cups granulated sugar Or coconut sugar
  • 2 tbsp lemon juice
  • 2 tbsp cornstarch or tapioca starch
  • 1 tsp lemon zest

Instructions
 

Preparation

  • Preheat oven to 350°F (175°C) and line a 9x13-inch pan with parchment, leaving an overhang for easy lifting.
  • In a large bowl, whisk oats, flour, almond flour, brown sugar, baking powder, and salt.
  • Stir in the melted coconut oil and vanilla until the mixture holds together; it should be crumbly but pressable.
  • Reserve about 1.5 cups of the crumble for the topping. Press the remaining mixture evenly into the bottom of the prepared pan. Bake for 12 minutes until just set.

Preparing the Filling

  • In a saucepan over medium heat, combine berries, sugar, lemon juice, and starch. Cook, stirring often, until the mixture thickens and bubbles, about 4–6 minutes. Remove from heat and stir in lemon zest.

Assembly and Baking

  • Spread the berry filling over the pre-baked crust, then sprinkle the reserved crumble evenly on top.
  • Return to the oven and bake for 20–25 minutes until the topping is golden.
  • Let the bars cool to room temperature, then refrigerate for at least 2 hours to set before slicing into bars.

Notes

Use frozen berries straight from the freezer to keep the filling juicy while holding structure. Refrigeration helps the filling thicken so bars slice neatly.

Nutrition

Serving: 1gCalories: 200kcalCarbohydrates: 30gProtein: 3gFat: 8gSaturated Fat: 5gSodium: 90mgFiber: 3gSugar: 10g
Keyword Berry Bars, Dessert Bars, Fall Treat, healthy dessert, Vegan Berry Crumble
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