Crispy Triple Berry Crumble Bars
These crispy triple berry crumble bars feature a golden oat topping and a juicy mix of raspberries, blueberries, and blackberries. Perfect for a quick homemade treat that balances sweet and tart flavors with a crunchy texture.
- Prep Time: 15 minutes
- Cook Time: 50 minutes
- Total Time: 1 hour 5 minutes
- Yield: 12 bars 1x
- Category: Dessert
- Cuisine: American
Ingredients
- 1 ½ cups old-fashioned rolled oats (135g)
- 1 cup all-purpose flour (125g)
- ⅔ cup packed brown sugar (135g)
- ¾ cup cold unsalted butter, cubed (170g)
- ½ tsp baking powder
- ⅛ tsp salt
- 1 cup fresh or frozen raspberries (125g)
- 1 cup fresh or frozen blueberries (150g)
- 1 cup fresh or frozen blackberries (120g)
- ⅓ cup granulated sugar (67g)
- 1 tbsp fresh lemon juice
- 2 tbsp cornstarch
- 1 tsp vanilla extract (optional)
- ¼ tsp ground cinnamon (optional)
Instructions
- Preheat oven to 350°F (175°C). Line a 9×9 inch (23×23 cm) baking pan with parchment paper, leaving an overhang on the sides.
- In a large bowl, combine rolled oats, all-purpose flour, brown sugar, baking powder, salt, and ground cinnamon if using. Toss together.
- Add cold, cubed unsalted butter. Use a food processor pulse or pastry cutter to work butter into dry ingredients until mixture resembles coarse crumbs with some pea-sized bits.
- Reserve half of the oat mixture for topping. Press the other half firmly and evenly into the bottom of the prepared pan.
- Bake the base for 12-15 minutes until lightly golden.
- While the base bakes, mix raspberries, blueberries, blackberries, granulated sugar, lemon juice, cornstarch, and vanilla extract if using in a medium bowl. Toss gently to coat evenly.
- Once the base is slightly cooled, spread the berry filling evenly over it without pressing down.
- Sprinkle the reserved oat crumble evenly on top of the berries.
- Bake for 35-40 minutes until the topping is golden brown and the berry filling is bubbling. Tent with foil if topping browns too fast.
- Cool completely on a wire rack for about 2 hours to let filling set and topping crisp up.
- Slice into bars using the parchment overhang to lift them out. Serve as desired.
Notes
[‘Use cold butter to keep the oat topping crumbly and crisp.’, ‘Pre-bake the crust to prevent sogginess.’, ‘Use cornstarch to thicken the berry filling and avoid runniness.’, ‘Handle berries gently to prevent crushing and watery filling.’, ‘Tent with foil if topping browns too quickly.’, ‘Cool bars completely before slicing for clean cuts and crisp texture.’, ‘Frozen berries can be used but should be thawed and drained before mixing.’, ‘For gluten-free, substitute all-purpose flour with almond flour or gluten-free blend.’, ‘For dairy-free or vegan, use plant-based butter substitutes.’, ‘Add chopped nuts like pecans or walnuts to the oat topping for extra crunch.’]
Nutrition
- Serving Size: 1 bar
- Calories: 180210
- Sugar: 12
- Fat: 7
- Carbohydrates: 30
- Fiber: 3
- Protein: 2
Keywords: triple berry bars, crumble bars, oat topping, berry dessert, easy dessert, homemade bars, berry crumble, snack bars