Blackberry Pie Bars (Buttery Lemon Crust!)

Name: Blackberry Pie Bars
Prep time: 15 min
Cook time: 45 min
Total time: 60 min
Ingredients: 3 cups all-purpose flour; 1½ cups granulated sugar; ¼ teaspoon salt; Zest of 1 large lemon; ½ cup unsalted butter (cold and cut into small cubes); 3 eggs (lightly beaten); 4 cups fresh blackberries (halved); 1 tablespoon lemon juice; 1 tablespoon cornstarch; ¾ cup granulated sugar

Stacked blackberry bars on a white plate with fresh blackberries, showing buttery shortbread crust, juicy blackberry filling, and golden crumb topping.

These blackberry pie bars are packed with juicy blackberries and sandwiched between a buttery, lemon-zested crust and a golden crumble topping. They taste just like blackberry pie but come together in a fraction of the time.

Jump to Recipe

Table of Contents

Why You'll Love This Recipe
Ingredients For Blackberry Pie Bars
How to Make Blackberry Pie Bars
Storing Blackberry Pie Bars
FAQ
JUMP TO RECIPE

In This Post

Blackberry pie bars give you everything you love about a classic blackberry pie: the sweet jammy filling, the buttery crust, and the golden crumble top. But, this version works without a rolling pin, needs no pie dish, and is totally no fuss. Bake, cut them into bars, and you're done.

Three stacked blackberry bars with layers of buttery crust, glossy blackberry filling, and crumb topping, served with fresh blackberries.

What sets this recipe apart really is the crust. A touch of fresh lemon zest goes right into the dough, giving it a brightness that balances the natural sweetness of the blackberries in a way that a plain butter crust simply can't. It's a small detail, but it makes a real difference in the flavor of the finished bar.

This is the kind of recipe you'll love for a summer party, an easy weeknight dessert, or a bake sale. One pan, one dough, and fresh blackberries are pretty much all you need.

Why You'll Love This Recipe

This blackberry bars recipe will earn itself a permanent spot in your baking rotation for good reason.

One dough does everything. The same simple dough forms the base, holds the filling in place, and works as the crumble over the top. Bonus: no extra bowls to wash.

The lemon zest makes it. Most blackberry pie bar recipes skip this step, but the zest woven into the crust adds a subtle citrus note that keeps the bars from tasting boring. It brightens the whole thing without being obvious.

No pie skills required. There is no rolling, no crimping, and no blind baking. If you can press dough into a pan and scatter crumbles (and everyone can!), you can make these.

They travel well. Unlike pie, these bars hold their shape once their cooled and sliced. They are easy to pack, easy to serve, and easy to share.

Ingredients For Blackberry Pie Bars

Ingredient collage for blackberry bars showing labeled ingredients including blackberries, flour, eggs, butter, sugar, lemon juice, lemon zest, cornstarch, and salt on a white background.

What you'll need to make blackberry pie bars:

Crust and Topping

3 cups all-purpose flour
1½ cups granulated sugar
¼ teaspoon salt
Zest of 1 large lemon
½ cup unsalted butter, cold and cut into small cubes
3 eggs, lightly beaten

Blackberry Filling

4 cups fresh blackberries, cut in half
1 tablespoon lemon juice
1 tablespoon cornstarch
¾ cup granulated sugar

Ingredient Notes

Butter must be cold going into the mixer. Cold butter creates the pea-sized crumbles that give the crust its texture. If it warms up, the dough will be greasy rather than crumbly.

Lemon zest is what sets this crust apart. Use a microplane and zest directly into the flour mixture so none of the aromatic oils are lost.

Fresh blackberries work best here. I haven't tried this recipe with frozen berries, but if you're going to try, I would suggest you thaw them fully and drain off any excess juice before mixing the filling.

How to Make Blackberry Pie Bars

Just like my peach bars and strawberry pie bars, I use a really simple technique here: the crust and the crumble topping are actually the same mixture. It's a sweet pastry dough, so you won't feel like the crumble is too plain.

The crust gets packed tightly and the topping gets sprinkled, and in between, the perfect jammy filling. These fruity bars are so easy and delicious, you'll be making them all season long.

Read This Before You Start

Keep the butter cold. If the butter softens before you mix the dough, the texture of the crust will be dense instead of crumbly. Work quickly, and if your kitchen is warm, chill the cubed butter in the freezer for 10 minutes before you start.

Rinse your blackberries just before using them. Place them in a colander, run cold water over them, and let them drain for a few minutes. Don't rinse them ahead of time. They tend to get a bit soggy after they get wet.

Halving the blackberries matters. It helps them release their juice evenly during baking and ensures the filling sets properly.

Cool completely before cutting. The filling continues to set as the bars cool. If you cut them too soon, the filling will run. Give them at least an hour to cool at room temperature.

Check early. Oven temperatures vary, so start checking your bars at the 45-minute mark and pull them as soon as the topping is light golden brown.

MAKE THE CRUST

Add the flour, sugar, salt, and lemon zest to a stand mixer and mix on low speed until combined. Next, add the cold butter and mix until the mixture resembles pea-sized crumbles. Finally, add the beaten eggs and mix just until a crumbly dough forms.

A food processor or a large bowl with a pastry blender works just as well if you don't have a stand mixer.

Crumbly lemon-zested pie bar dough in a stand mixer bowl — Don't overmix. You want the dough to hold together when pressed but still feel crumbly.

Press two-thirds of the dough in an even layer across the bottom of the pan. Use the flat bottom of a measuring cup to help smooth it out.

Pressed lemon pie bar crust in a white 9x13 baking dish

MAKE THE FILLING

In a separate bowl, toss the halved blackberries with the lemon juice, cornstarch, and sugar until evenly coated.

Fresh blackberry filling with sugar and lemon juice in a glass mixing bowl — Don't skip the cornstarch - it thickens the filling while it cooks, so it's not runny.

Spread the mixture over the crust in an even layer.

Blackberry filling spread over the crust in a white 9x13 baking dish

Break the remaining dough into pieces and scatter it over the blackberry filling.

Bake for 45 to 50 minutes, until the topping is light golden brown.

Remove from the oven and cool completely in the pan before slicing into bars.

Baked blackberry pie bars with golden crumble topping in a white baking dish on a wire cooling rack — Remove from the oven and cool completely in the pan before slicing into bars. The filling needs time to set, so don't rush this step.

I have been known to bake a pan of blackberry bars to take to parties, especially in the summer. The color of the filling stands out on a 4th of July dessert table, and they're always a hit at cookouts and potlucks. But if you can get your hands on fresh blackberries, they're truly a treat any time of year.

More Easy Blackberry Recipes You'll Love

Desserts

Blackberry Cobbler

45 minutes mins

Desserts

Blackberry Crumble

1 hour hr

Desserts

No Bake Blackberry Cheesecake

2 hours hrs 30 minutes mins

Storing Blackberry Pie Bars

Refrigerator: Store your blackberry bars in an airtight container or cover the pan tightly with plastic wrap. They will keep for up to three days and taste great cold straight from the fridge.

Freezer: Once the bars are fully cooled and sliced, place them in an airtight container with parchment paper between the layers so they don't stick together. Freeze for up to three months. Thaw overnight in the refrigerator before serving.

Overhead view of blackberry bars being lifted with a spatula, showing the golden crumb topping, blackberry filling, and parchment-lined pan.

FAQ

Can I use frozen blackberries?

Technically, yes, you can make blueberry squares with frozen berries. Thaw them completely and drain off any excess juice before mixing the filling. Too much liquid will make the filling loose and may affect how cleanly the bars slice.

Can I use a different berry in this recipe?

Blueberries and raspberries are the best substitutes and will behave similarly to blackberries in this recipe. Strawberries will work but need to be sliced, and their higher water content will give the filling a softer texture.

How do I know when the bars are done?

The crumble topping should be light golden brown and the filling should be bubbling at the edges. Start checking at the 45-minute mark.

Why do I need to cool blackberry bars completely before cutting?

The filling sets as the bars cool. Cutting too soon will cause the filling to run and the bars will fall apart. Give them at least an hour at room temperature before slicing.