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Home » Brownies & Bars » Mixed Berry Crumble Bars

Mixed Berry Crumble Bars

Published: May 26, 2022 by Allison · 155 Comments

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These buttery crumb bars are filled with mixed berries and a touch of lemon. This simple recipe uses the same mixture for the the crust and topping making ait an easy dessert you can whip up all summer long.

If you love baking with berries this is the recipe for you. Every bite is bursting with summer flavors and you can pack them up and take them wherever you are headed.

Stack of two berry crumble bars.
Jump to:
  • Why you’ll love this recipe
  • Recipe overview
  • Recipe tips
  • Serving options
  • More summer desserts
  • Recipe

Why you’ll love this recipe

  • Made with basic ingredients
  • The crust and topping are made from the mixture
  • Filled with the fresh berries of your choice
  • Flavored with vanilla and a touch of lemon
  • Great for feeding a crowd
  • Easy to slice and serve
Closeup of berry crumble bars on parchment paper.

Recipe overview

Crust and topping: A buttery, lemon-scented dough is used as both the crust and topping. Press half of it into the bottom of a pan, and reserve the rest for crumbling over the fruit.

Butter, egg, flour in a stainless bowl.

Filling: Here’s where you can adapt this recipe to suit your taste (or whichever berries you have on hand). I like a mixture of strawberries, blueberries, raspberries, and blackberries (as pictured). You can absolutely use all of one berry or a mixture of berries. Cornstarch thickens the berry mixture and a touch of lemon complements the fresh flavors.

Berry crumble bars recipe preparation. Crust in a pan and berries in a bowl.

Recipe tips

  • Line your pan with parchment paper or foil for easy removal
  • When grating lemon zest, only use the yellow part of the skin, not the white pith
  • Mix up the types of berries to suit your tastes
  • Chill in the fridge before cutting, this makes for cleaner slices
  • Plan to make these the day you are serving them (ideally) or up to 24 hours in advance.
  • If you love a crumb topping, you should also try our Raspberry Crumble Cookies

Serving options

These bars can be served chilled or at room temperature. Serve as-is or top with ice cream or whipped cream.

Berry crumble bar on a white plate with a scoop of ice cream.

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Note July 2018: I changed this recipe just slightly. After a few comments requesting a larger quantity, I increased the recipe to make a 9×13 pan. I also added a bit of lemon to brighten the berry flavors.

More summer desserts

  • Stack of two lemon blueberry bars
    Lemon Blueberry Bars
  • Blackberry Cobbler on a white plate with a scoop of vanilla ice cream.
    Blackberry Cobbler
  • Berry crisp topped with ice cream in a baking dish.
    Berry Crisp
  • Large trifle dish with layers of berries, cake and whipped cream.
    Berries and Cream Trifle

Recipe

Stack of two berry crumble bars.

Mixed Berry Crumble Bars

Buttery crumb bars filled with strawberries, raspberries, blueberries, and blackberries. This simple recipe uses the same mixture for the the crust and topping.
4.95 from 67 votes
Print Pin SaveSaved!
Course: Dessert
Cuisine: Dessert
Prep Time: 20 minutes
Cook Time: 40 minutes
Total Time: 1 hour
Servings: 20
Calories: 212kcal
Author: Allison – Celebrating Sweets

Ingredients

Crust and Topping:

  • 1 cup granulated sugar
  • 1 teaspoon baking powder
  • 3 cups all purpose flour
  • ¼ teaspoon salt
  • finely grated zest of 1 small lemon, optional, but so good!
  • 1 cup cold unsalted butter, cut into cubes
  • 1 large egg
  • ½ teaspoon pure vanilla extract

Berry Filling:

  • 4 ½ cups chopped fresh berries, see note
  • ½ cup granulated sugar
  • 4 teaspoons cornstarch
  • juice of 1 small lemon

Instructions

  • Preheat oven to 375°F. Line a 9×13 pan with foil or parchment, and butter or spray with non-stick spray.

For the crust and topping:

  • Using a hand mixer or stand mixer fitted with the paddle attachment, combine granulated sugar, baking powder, flour, and salt. Add lemon zest, butter, egg, and vanilla. Beat on low speed until the butter is evenly distributed in small pieces and the mixture is crumbly.
  • Dump a little more than half of the mixture into the bottom of the prepared pan. Use your hand or the bottom of a measuring cup to evenly press the dough into the pan.

Filling:

  • Gently stir together all ingredients until well incorporated.
  • Spread the filling over the crust, then crumble the remaining dough over the top of the berries.
  • Bake for approximately 40-45 minutes, until the top is light golden brown and the fruit is bubbling. Transfer pan to a wire rack to cool completely. For the cleanest slices refrigerate before cutting.

Notes

I used a combination of strawberries, blackberries, blueberries, and raspberries. I chopped the strawberries, halved the large blackberries, and left the raspberries and blueberries whole.
These bars are best within one day of being made.
Recipe adapted from Smitten Kitchen.

Nutrition

Calories: 212kcal | Carbohydrates: 29g | Protein: 2g | Fat: 9g | Saturated Fat: 5g | Cholesterol: 32mg | Sodium: 113mg | Potassium: 46mg | Sugar: 15g | Vitamin A: 295IU | Calcium: 15mg | Iron: 0.9mg

Nutritional Information is an estimate based on third-party calculations and may vary based on products used and serving sizes.

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Comments

  1. Tom in Toronto

    March 02, 2022 at 7:16 pm

    4 stars
    I chose this recipe for it’s simplicity, and used it with some helpers to convert a few frozen pounds of last summer’s harvest (I have a lot of berries) to dessert squares for an impromptu community gathering. After the first batch…which was a bit soggy-bottomed…we added the same amount of flour as cornstarch, and also tried hard to ensure the fruit mix was mostly dry-ish. Much better. If you’re using frozen fruit, we advise to err on the side of dry.

    I also added oats and b. sugar to the topping, who can resist, and broiled it after baking, just a few minutes for caramelization. The recipe was great, it all got eaten!

    Reply
    • Allison

      March 05, 2022 at 6:19 am

      Thanks for sharing! Glad you enjoyed it. 🙂

      Reply
      • Cheryl

        May 17, 2022 at 8:23 pm

        5 stars
        I made these tonight. I used the lemon zest, yummy, I also used lakanto monk fruit sweetener instead of sugar. I used the same amount except for the berries I added 3/4 cup . Also used fresh berries, blueberries, strawberries, raspberries and blackberries. Turned out fantastic.

      • Allison

        May 20, 2022 at 12:59 pm

        I’m glad you enjoyed them! 🙂 Thanks for stopping by.

  2. Sharada

    May 17, 2022 at 12:06 pm

    These were such a big hit with my family and friends! Planning on making them again to use up a big batch of berries and wanted to know if these can be frozen. If so for how long..TIA!

    Reply
    • Allison

      May 26, 2022 at 12:37 pm

      Hi! I have frozen a few leftover bars before and I find that they don’t hold up too great. Definitely still edible, but the texture is quite soft. I would make them fresh to share with family and friends.

      Reply
  3. Melissa

    June 18, 2022 at 11:33 pm

    5 stars
    I’ve made this recipe the last 3 years in a row for Father’s Day and they are always a hit. Served with homemade whipped cream. 🙂 Thank you for a wonderful and simple recipe!

    Reply
    • Allison

      June 20, 2022 at 7:03 pm

      I’m so happy to hear that! Thanks for taking the time to leave a comment.

      Reply
  4. Brandi

    June 20, 2022 at 5:15 pm

    5 stars
    What a delicious summer treat. My husband and I loved these.

    Reply
    • Allison

      June 20, 2022 at 7:01 pm

      I’m so glad! 🙂

      Reply
  5. Chloe

    July 16, 2022 at 4:35 pm

    5 stars
    As someone who doesn’t eat very much or very well, this recipe was amazing and I will definitely make it again in the near future

    Reply
    • Allison

      July 26, 2022 at 10:36 am

      That’s great to hear. Thanks for stopping by!

      Reply
  6. Joanie

    July 26, 2022 at 7:03 am

    5 stars
    This has become a family favorite! Yummy

    Reply
    • Allison

      July 26, 2022 at 9:46 am

      I’m so glad! Thanks for taking the time to comment. 🙂

      Reply
  7. Louise Cunningham

    July 29, 2022 at 3:43 pm

    5 stars
    Beautiful

    Reply
  8. Liz Bader

    July 31, 2022 at 5:20 pm

    5 stars
    After purchasing a large amount of fresh mixed berries from a local farmer’s market, I was at a loss as to what to do with these wonderful berries before they went over. I found this recipe and made it today, only adding some sliced almonds on top as an extra yum on top. It is delicious, not too sweet and not too tart. A nice balance and simple to make. It’s a keeper!

    Reply
    • Allison

      August 02, 2022 at 5:10 pm

      I’m glad you enjoyed the recipe. Thanks for taking the time to comment. 🙂

      Reply
  9. Chloe

    August 17, 2022 at 11:19 am

    5 stars
    I loved this and the crust is so good I made cookies out of it.

    Reply
    • Allison

      August 19, 2022 at 1:32 pm

      Great idea! Thanks for stopping by. 🙂

      Reply
  10. Zoe

    January 19, 2023 at 4:18 pm

    5 stars
    This is my go to recipe to impress everyone! The amount of people who have asked for this recipe is insane. Definitely a crowd pleaser

    Reply
    • Allison

      January 20, 2023 at 2:06 pm

      I’m so glad! Thanks for stopping by. 🙂

      Reply
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aboutHi, I'm Allison! I'm a busy wife and mom with a passion for cooking and baking. This is where you'll find my favorite homemade recipes, designed to help you make every day delicious! Read more....

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