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Home » Brownies & Bars » Mixed Berry Crumble Bars

Mixed Berry Crumble Bars

Published: May 26, 2022 by Allison · 170 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 topped with vanilla ice cream on a white plate with a gold spoon.
    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.
4.96 from 84 votes
Print Pin SaveSaved!
Course: Dessert
Cuisine: Dessert
Prep Time: 20 minutes minutes
Cook Time: 40 minutes minutes
Total Time: 1 hour 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.

Tried this recipe?Leave a comment and rating below!
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Comments

  1. Sam

    May 04, 2023 at 9:45 am

    Can I use preserves in this recipe instead of fresh fruit? Thanks so much!

    Reply
    • Allison

      May 05, 2023 at 11:10 am

      I wouldn’t recommend it for this recipe but I have two other options for you: Raspberry Crumble Cookies, Oatmeal Jam Bars.

      Reply
  2. Maggie

    May 28, 2023 at 6:07 pm

    Have you heard of anyone using a gluten free flour option? Wondering which substitute might work best!!?

    Reply
    • Allison

      June 04, 2023 at 10:23 am

      I typically recommend a 1:1 gluten free baking blend. Although, I haven’t tried it with this specific recipe.

      Reply
  3. Eva

    June 03, 2023 at 6:35 pm

    5 stars
    I made these bars last summer and they were amazing!

    Any suggestions for using frozen berries instead of fresh?
    (We still have some strawberries from last season that need to be used up!)

    Reply
    • Allison

      June 04, 2023 at 10:14 am

      Hi! You’d just have to play around with it. You’ll need to add extra cornstarch since the berries will release juices when they thaw. The bars might be a bit more moist than when they’re made with fresh berries, but you could always eat them with a fork if that’s the case. Enjoy!

      Reply
  4. Linda

    June 28, 2023 at 11:50 am

    Can you freeze these? Thank you.

    Reply
    • Allison

      July 03, 2023 at 12:20 pm

      You’re welcome to try but I think the crust/topping will soften up quite a bit.

      Reply
  5. Liz Smith

    August 02, 2023 at 9:50 am

    Hi,
    I made this recipe with GF flour and it was not good – very dry and sandy. The flavor was great but it felt like eating sawdust! Otherwise, great recipe – just not suitable to GF flour.

    Reply
    • Allison

      August 04, 2023 at 10:08 am

      Good to know. Thanks for sharing your experience.

      Reply
  6. Nadine Beaufort

    August 31, 2023 at 10:13 am

    Could frozen berries be used?

    Reply
    • Allison

      August 31, 2023 at 12:41 pm

      I haven’t tried it. You might be able to check the comments to see if anyone else has.

      Reply
  7. Bridget

    September 04, 2023 at 6:11 pm

    I have these in the oven with a gf 1:1 blend right now. Hoping they turn out. Anyone ever add a light “powdered sugar frosting” drizzle to these? I think I am going to try that to see how it is.

    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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