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    Home » Breakfast » Blackberry Crumble Bars

    Blackberry Crumble Bars

    Published: August 27, 2021 · Jill Baird · 3 Comments

    blackberry crumble bars recipe

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    Jump to Recipe

    These Blackberry Crumble Bars are buttery and tender with a thick layer of juicy blackberry filling running through the middle.  They’re easy to make and perfect for a sweet breakfast or afternoon treat.

    Jump to:
    • Easy Blackberry Crumble Bars
    • Ingredients in Blackberry Crumble Bars
    • How to Make Blackberry Crumble Bars
    • Recipe Variations
    • Tips and Tricks
    • Storing and Freezing
    • Blackberry Crumble Bars

    Easy Blackberry Crumble Bars

    When buttery crumbles and sweet summer berries meet it’s like a little slice of heaven, and these Blackberry Crumble Bars are certainly no exception.  They are rich and buttery, juicy and sweet and taste amazing with a big cup of coffee or even a scoop of ice cream.  

    Around our house we’ve eaten them for breakfast, as afternoon snacks, at picnics and even in the car between soccer games.  With no doughs to roll out or blind baking to do, they really are about as easy as it gets.

    Try swapping out blackberries for your other favorite berries, or mix up some of the flavors with our suggestions below.  Enjoy!

    Ingredients in Blackberry Crumble Bars

    • Flour - we use all-purpose flour for these bars.
    • Butter - use cold, unsalted butter for this recipe.
    • Sugar - this recipe calls for regular white granulated sugar.  You could also substitute ⅓ of the sugar with brown sugar if you want.
    • Baking Powder - this helps the crumble to stay nice and soft.
    • Cinnamon - any kind of ground cinnamon will work.
    • Salt - sea salt works great.
    • Lemon - fresh lemons taste best.  Also, it’s easiest to zest before you juice the lemons.
    • Egg - any kind of large eggs will work great.
    • Vanilla Extract - pure vanilla extract tastes best.
    • Blackberries - you can use fresh blackberries or frozen blackberries for this recipe.  Or, substitute raspberries, blueberries, strawberries or even a combination of them.
    • Cornstarch - this helps to thicken the fruit mixture.

    How to Make Blackberry Crumble Bars

    1. Prepare your baking pan.  Preheat oven to 350 degrees F, then grease a 9"x13" baking dish or line with parchment paper and set aside.
    2. Prepare the crumble mixture.  In a food processor, pulse the butter and flour until the mixture resembles coarse meal.  Add the sugar, baking powder, cinnamon, salt and zest of one lemon, then pulse again to combine.  Finally, add the egg and vanilla extract and pulse just until evenly combined.
    3. Press ⅔ of the crumble mixture into the pan.  Add ⅔ of the crumble mixture to the prepared baking pan and press it down evenly using the flat side of a measuring cup or your hands.  Set aside the remaining ⅓ of the crumble.
    4. Make the blackberry filling.  In a medium saucepan, combine the blackberries, sugar, cornstarch and lemon juice.  Bring to a boil over medium high heat and boil for 2 minutes, mixing frequently.
    5. Finish building bars.  Once it has thickened, pour the blackberries over the prepared crust and top with remaining crumble topping.
    6. Bake.  Bake in a preheated 350 degree oven for 25-35 minutes, or until the crumble topping is golden brown.
    7. Cool, cut and serve.  Remove from the oven and let cool completely before cutting squares or bars.  Enjoy!

    Recipe Variations

    Using this recipe as a base, you can make all sorts of yummy berry crumb bars!  Here are a few ideas to get you started:

    • Different berries.  Try substituting raspberries, boysenberries, strawberries, blueberries or any mixture of these.  They all taste great!
    • Add nuts.  Try adding ⅓ cup of chopped pecans, almonds or walnuts to the crumble for a bit of crunch.  For a bit of nut-free crunch, try adding oats.
    • Other crumble flavors.  To flavor the crumble, you can also brown the butter and let it cool again completely, then make as directed.  Or, try substituting a portion of the sugar with brown sugar.  You can also mix in other flavors like extra lemon or lime zest, clove or ginger. 

    Tips and Tricks

    • If you use frozen blackberries, you may need to cook the mixture slightly longer to be sure it doesn't end up too liquidy.
    • Even though it’s virtually impossible, we suggest waiting until these are completely cool before cutting.  Obviously, you can still sneak a little bite beforehand!
    • We like to enjoy these at room temperature, but they taste really great even out of the fridge, or warmed up slightly in the microwave.

    Storing and Freezing

    • Store: these can be stored in an airtight container with pieces of parchment paper between the layers.  At room temperature they will be good for up to 4 days.  Or, store in the fridge for up to 1 week.
    • Freeze:  you can also freeze your Blackberry Crumb Bars in any airtight container with parchment paper between the layers for up to 2 months.  To thaw, pull from the freezer and let sit at room temperature for a few hours or even overnight.
    Print

    Blackberry Crumble Bars

    These Blackberry Crumble Bars are buttery and tender with a thick layer of juicy blackberry filling running through the middle.  They’re easy to make and perfect for a sweet breakfast or afternoon treat.
    Course Breakfast, Dessert
    Cuisine American
    Prep Time 15 minutes
    Cook Time 35 minutes
    Total Time 50 minutes
    Servings 12 people
    Calories 378kcal
    Author The Carefree Kitchen

    Ingredients

    Crumble Crust

    • 3 cups All-Purpose Flour
    • 1 cup Butter
    • 1 cup Sugar
    • 1 teaspoon Baking Powder
    • 1 teaspoon Cinnamon
    • ¼ teaspoon Salt
    • 1 large Lemon (Zest)
    • 1 large Egg
    • 1 teaspoon Vanilla Extract

    Blackberry Filling

    • 3 cups Blackberries
    • ½ cup Sugar
    • 2 Tablespoons Cornstarch
    • 2 Tablespoons Lemon Juice

    Instructions

    • Preheat oven to 350 degrees F, then grease a 9"x13" baking dish or line with parchment paper and set aside.
    • In a food processor, pulse the butter and flour until the mixture resembles coarse meal. Add the sugar, baking powder, cinnamon, salt and zest of one lemon, then pulse again to combine. Finally, add the egg and vanilla extract and pulse just until evenly combined.
    • Add ⅔ of the crumble mixture to the prepared baking pan and press it down evenly using the flat side of a measuring cup or your hands. Set aside the remaining ⅓ of the crumble.
    • In a medium saucepan, combine the blackberries, sugar, cornstarch and lemon juice. Bring to a boil over medium high heat and boil for 2 minutes, mixing frequently.
    • Once it has thickened, pour the blackberries over the prepared crust and top with remaining crumble topping.
    • Bake in a preheated 350 degree oven for 25-35 minutes, or until the crumble topping is golden brown.
    • Remove from the oven and let cool completely before cutting squares or bars. Enjoy!

    Nutrition

    Calories: 378kcal | Carbohydrates: 55g | Protein: 5g | Fat: 16g | Saturated Fat: 10g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 4g | Trans Fat: 1g | Cholesterol: 56mg | Sodium: 191mg | Potassium: 152mg | Fiber: 3g | Sugar: 27g | Vitamin A: 575IU | Vitamin C: 13mg | Calcium: 41mg | Iron: 2mg

    More Blackberry Recipes

    • Easy Homemade Blackberry Syrup
    • Triple Berry Muffins
    • Blackberry Pie

    If you’ve tried this recipe, please rate it and leave a comment on this post. I love hearing feedback from you helps me and other readers too! If you love Pinterest,  feel free to leave a comment and photo there too.  Also, if you like to share, use the hashtag #thecarefreekitchen on Instagram and tag me @thecarefreekitchen so I can find you and give your post some love. You can also find me on Facebook at The Carefree Kitchen. Thank you!!

    Pinterest pin for Blackberry Crumble Bars.

    These Blackberry Crumble Bars are rich and buttery, juicy and sweet and super simple to make. Enjoy as a sweet breakfast or afternoon treat.

    « Easy Homemade Blackberry Syrup
    Blackberry Pie »

    Reader Interactions

    Comments

    1. Paula J. Rowell

      March 24, 2022 at 3:52 pm

      Unfortunately, these did not come out very good. They seemed a bit dry and very very sweet.

      Reply
    2. Mel

      August 30, 2021 at 7:28 am

      The blackberries pair so well with the delicious crumble. Not too sweet - it really allows the blackberry flavor to shine through!

      Reply
    3. Gina

      August 29, 2021 at 12:16 pm

      Such a great classic crumble bar! Love that it's adaptable for whatever berry I have on hand. Always a hit when I make these!

      Reply

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