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These cheery, blackberry crumb bars are a summertime favorite and make a perfect afternoon snack or simple dessert.

Blackberry Crumble Bars
I love crumbles. Maybe it’s the name, it’s so old-fashioned and makes me think of long summer walks along blackberry hedges.
I imagine filling pails with sweet-smelling berries and watching small children with berry-stained mouths and grubby hands.
Later, we’d deliver the blackberries to a grandmother who would magically transform them into pots of jam and pies on the windowsill.
The berries would find themselves in mini berry cheesecakes, or blackberry vanilla cupcakes, or this lemon yogurt cake. And there would always be crumb bars served with tea in the afternoon tea.
These black berry crumble bars are everything I love about berry season in a handheld dessert.
Blackberry Bars
I don’t think I can overstate how quick and easy it is to make these delicious fruit bars.
Making Blackberry Bars is as simple as stirring together the crumble topping and pressing half of it into a baking pan. Top that with sugared berries and then sprinkle with the remaining crust.
They are perfect for a quick handheld dessert that you can carry out into the yard to enjoy the long summer twilight while sitting on the porch swing.
These bars are great dessert to whip up for unexpected guests. Or make them as a snack for a kids’ event, game, or to celebrate after a recital.
You really don’t need an excuse, this is a delicious snack for any reason. You aren’t likely to be bringing any leftovers home.

Berry Bars Recipe
The berry bar ingredients are pantry staples. And if you’re lucky, you can pick your own blackberries from a nearby hedge. If that’s not available, your local grocery store or farmer’s market is sure to have some.
Raspberries or boysenberries would be excellent in this easy summertime recipe as well. Frozen berries can be used. However, they’ll need to be thawed and drained to keep your crumble from getting too soggy.
This is a great recipe for kids to try. They can pick the berries and then come home and make the Crumb Bars.
The kids always think it’s fun to push the topping into the pan with their fingers.
Easy peasy and you’ll have these bars coming out of the oven in no time. Serve with tea or coffee or a big glass of cold milk. Blackberry bars are perfect for picnics and late afternoon snacks.

Easy Tip for Cutting in the Butter
You can grate the cold butter straight into the flour! Use butter straight from the refrigerator, don’t let it warm on the counter while you set up the grater.
It takes only 15-20 seconds to grate a cold stick of butter. Toss the fluffy grated butter into flour to lightly coat it and then all you need is a fork or your fingers to turn it into perfect crumbs in moments.

Blackberry Bars Recipe
- Preheat oven to 375 F. Grease a 9 x 13 inch baking pan. Stir together the flour, 1 cup white sugar, baking powder, and salt. Cut in the butter, until the butter is in pea-sized pieces. (See note below for an easy tip!)
- Stir in the beaten egg with a fork. Press half of the dough into the bottom of the baking dish. Combine the blackberries, lemon juice, cornstarch, and sugar in a medium-size mixing bowl and stir to combine.
- Scatter the sugared berries over the crust in the pan. Sprinkle with the other half of the dough mixture.
- Bake at 375 F for 30-35 minutes, or until lightly browned. Let cool completely.

Blackberry Crumble Bars
Ingredients
Crust and Topping Ingredients
- 3 cups all-purpose flour
- 1 cup butter, cut into pieces
- 1 cup granulated white sugar
- 1/2 teaspoon salt
- 1 teaspoon baking powder
- 1 large egg
Blackberry Filling Ingredients
- 4 cups blackberries
- 1 tablespoon fresh lemon juice
- 1 tablespoon cornstarch
- 3/4 cup granulated white sugar
Instructions
- Preheat oven to 375 F. Grease a 9 x 13 inch baking pan. Stir together the flour, 1 cup white sugar, baking powder, and salt. Cut in the butter, until the butter is in pea-sized pieces. (See note below for an easy tip!)
- Stir in the beaten egg with a fork. Press half of the dough into the bottom of the baking dish. Combine the blackberries, lemon juice, cornstarch, and sugar in a medium-size mixing bowl and stir to combine.
- Scatter the sugared berries over the crust in the pan. Sprinkle with the other half of the dough mixture.
- Bake at 375 F for 30-35 minutes, or until lightly browned. Let cool completely.
Notes
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
{originally published 6/3/16 – recipe notes and photos updated 1/22/21}
Here are a few more blackberry recipes to try:
Blackberry Lime Cupcakes from a Cookie Named Desire
Blackberry Cheesecake Brownies from Oh, Sweet Basil
No Churn Vanilla Blackberry Swirl Ice Cream from Celebrating Sweets


















These Blackberry Crumble Bars are wonderful! I made the recipe exactly as written. Used fresh Blackberries from our garden. The recipe was so easy to follow and easy to make.
Thank you so much Mary for sharing your recipe! ☺️
I’m thrilled you like the cobbler! Fresh blackberries from your own garden must be amazing. Enjoy!
These were amazing. I’m trying them with blueberries this time, without modifying the recipe.
I’m so glad you like the recipe, Angie!
These are fantastic! How do you store these? Room temp or refrigerator?
I’m glad you like them! I typically keep them in the fridge, Lexie.
Such a quick, tasty dessert! I’ve made this multiple times and it’s a family favorite!
I’m so glad you’re enjoying the bars, Kelsie.
I made these and they turned out amazing! They did get super soft though when I store them in an airtight container for the next day. Is there anyway to avoid that? Should I bake longer?
It probably depends on the humidity where you are, Elise. When I lived in the southwest, I could leave them loosely covered and they didn’t soften at all. You might try allowing some air into the container. (However, if you live in a humid area, that could make them soften even faster.) Another option to keep them firmer would be to store them in the fridge. I hope that helps!
I’m just wondering if anyone has tried doubling this recipe? I’d like to make them for a potluck and think there will be a lot of disappointed people if I only make a single batch!
That should work fine, Rhonda.
I made these today and followed the recipe exactly. The blackberry crumble came out perfect and was so delicious! A keeper ?
I’m always happy to hear that someone has added a recipe to their list of favorites, Elaine. Enjoy the blackberry crumble bars!
Omg, this is the best. I half the batch and use a mini food processor to blend it. Half at a time. So easy.
I’ve also used w/ apple & cinnamon.
One of my fav recipes.
YAY! I’m thrilled that the recipe has been a hit for you, Deirdre.
I love this recipe. Its easy and I had everything already in my fridge that I needed for this. It was delicious and didn’t take any longer then it should have. I definitely recommend this recipe!
Glad to hear that you’ve been loving the blackberry crumble bars. Happy baking!
These are so yummy! I was nervous with how dry the crust dough turned out before I baked them but I stuck with the recipe and they turned out perfect! I couldn’t wait for them to be “cool completely” haha! And ate mine slightly warm still. It was so good and felt like eating a less messy cobbler! Only regret is that the kids ate all the leftover berries so I can’t make a second one!
I am so happy you loved it! Thank you for trusting the process, Debbie.