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Irresistible Blackberry Pie Squares with Zesty Lemon Glaze: Your Go-To Dessert Bar Recipe

Prepare to fall in love with these delightful blackberry pie squares! Imagine a dreamy combination: a sweet, soft, and slightly cakey cookie base, generously filled with luscious blackberry pie filling, all crowned with a vibrant, tart lemon glaze. This easy-to-make dessert bar recipe brings together classic pie flavors in a convenient, sliceable form, perfect for any occasion. Whether you’re a seasoned baker or just starting, these squares promise a truly satisfying treat that will have everyone asking for more.

Stack of two Blackberry Pie Squares on a plate — A stack of two beautifully glazed Blackberry Pie Squares, ready to be enjoyed.

Why These Blackberry Pie Squares Are a Must-Try

What makes these blackberry dessert bars truly special? It’s their perfect blend of simplicity, versatility, and incredible flavor. Unlike traditional pies, there’s no fussy pastry crust to contend with. The base is a simple, tender cookie-like dough that comes together quickly, making this a fantastic option for bakers of all skill levels. Here’s why you’ll want to add this recipe to your repertoire:

Year-Round Enjoyment: This recipe ingeniously uses prepared pie filling, meaning you don’t have to wait for blackberry season to whip up a batch. Whether you prefer the convenience of store-bought filling or have a homemade batch from summer’s bounty, these squares deliver fresh-berry flavor any time of the year.
Effortless Preparation: Forget the stress of rolling out dough. The cookie base mixes up like a dream, creating a delicious foundation without the usual pie crust fuss. It’s significantly quicker than making a double-crust pie from scratch.
Perfect Texture Harmony: Each bite offers a delightful contrast – the soft, tender cookie base and a gooey, fruity blackberry center, all balanced by the bright, zesty lemon glaze. It’s a textural dream!
Infinitely Adaptable: While blackberries shine here, this recipe is a fantastic template for other fruit fillings. Imagine cherry, apple, blueberry, or even peach pie squares. The possibilities are endless, allowing you to customize this treat to your favorite fruit. My cherry pie squares recipe was born from this very adaptability, proving just how versatile this base can be!
A Crowd-Pleasing Dessert: These squares are easy to transport, serve, and share, making them ideal for potlucks, family gatherings, picnics, or simply as a comforting treat at home. They hold up beautifully and are always a hit.

Side photo of Blackberry Pie Squares in a jelly roll pan with some removed — Freshly baked blackberry pie squares cooling in a pan, with a few slices already enjoyed.

Essential Ingredients for Your Delicious Blackberry Pie Squares

Gathering your ingredients is the first step to creating these mouthwatering dessert bars. You’ll find most of these staples readily available in your pantry or at your local grocery store. For precise measurements, please refer to the recipe card below.

Ingredients for Blackberry Pie Squares — All the simple ingredients laid out, ready to create delicious blackberry pie squares.

For the Cookie Base:

Granulated Sugar: Provides the foundational sweetness for our tender cookie layer.
Unsalted Butter: Softened butter is key for creaming with sugar, contributing to the rich flavor and tender texture of the base.
Eggs: Act as a binder and add richness, helping to create a soft, cakey consistency.
Pure Vanilla Extract: Enhances all the flavors, adding a warm, aromatic note.
Unbleached All-Purpose Flour: The primary dry ingredient, forming the structure of the cookie layers. Using unbleached flour can result in a slightly more tender crumb.
Baking Powder: A leavening agent that gives the cookie base a subtle rise and airy texture, preventing it from being too dense.

For the Filling:

Blackberry Pie Filling: The star of the show! You can use either store-bought canned pie filling for ultimate convenience or your own homemade blackberry pie filling for an extra personal touch. Both will yield delicious results.

For the Zesty Lemon Glaze:

Powdered Sugar (Confectioners’ Sugar): Forms the base of our smooth, pourable glaze.
Unsalted Butter (Melted): Adds a touch of richness and helps create a silky texture for the glaze.
Fresh Lemon Juice: This is a crucial ingredient! The tartness of fresh lemon juice cuts beautifully through the sweetness of the bars and the blackberry filling, creating a perfect flavor balance. Do not substitute this with bottled lemon juice if possible, as fresh provides a much brighter, more authentic citrus flavor. You’ll typically need 2-3 tablespoons, which is roughly the juice from one medium lemon, to achieve a drizzle-able consistency.

How to Make Blackberry Pie Squares: A Step-by-Step Guide

Making these delightful blackberry dessert bars is surprisingly straightforward. Follow these simple steps for a perfect batch every time. Remember, detailed ingredient quantities can be found in the complete recipe card below.

Prepare Your Oven: Begin by preheating your oven to 350°F (175°C). This ensures your oven is at the correct temperature for even baking from the start.
Cream Wet Ingredients: In a large mixing bowl, using an electric mixer (either a stand mixer or a hand mixer) on medium speed, cream together the granulated sugar and softened unsalted butter until the mixture is light, pale, and fluffy. This can take several minutes. Once fluffy, add the eggs one at a time, beating well after each addition until fully incorporated. Finally, stir in the pure vanilla extract and beat until everything is well combined.
Incorporate Dry Ingredients: In a separate bowl, whisk together the unbleached all-purpose flour and baking powder to ensure they are evenly distributed. With your mixer speed turned down to its lowest setting, slowly add the flour mixture to the wet ingredients. Mix just until the flour is completely combined and no streaks remain. Be careful not to overmix, as this can lead to tough bars.
Assemble the Layers: Take about half of your prepared cookie batter (for best results, you can weigh the batter to get two even halves for the top and bottom layers). Spread this first half evenly onto an ungreased 15×10 inch jelly roll pan. Once the bottom layer is spread, carefully spoon and spread the blackberry pie filling over the top of the batter. Finally, dollop the remaining cookie batter by spoonfuls over the pie filling layer. Don’t worry if it doesn’t cover completely; it will spread during baking, creating a beautiful cobbler-like topping.
Bake to Golden Perfection: Place the pan in your preheated oven and bake for approximately 45 minutes, or until the top layer is beautifully golden brown and a toothpick inserted into the cookie dough portion comes out clean (avoid poking the fruit filling). It’s crucial not to underbake, as this can result in a gooey, unbaked center. Once baked, remove the pan from the oven and transfer it to a wire rack to cool.
Prepare and Drizzle Glaze: While the bars are still warm (but not hot), prepare the lemon glaze. In a small bowl, combine the powdered sugar, melted unsalted butter, and fresh lemon juice. Whisk until smooth and lump-free. The consistency should be drizzle-able; add a tiny bit more lemon juice if it’s too thick, or a pinch more powdered sugar if it’s too thin. Drizzle this glorious glaze generously over the warm blackberry pie squares.
Cool and Serve: Allow the glazed bars to cool completely on the wire rack before cutting them into squares. This patience is key, as cooling allows the bars to set properly, making them easier to cut and ensuring the layers stay intact. Once cooled, slice and enjoy!

Blackberry Pie Square broken up on a plate with a fork — A single blackberry pie square, showing its delicious layers, with a fork ready to take another bite.

Blackberry Pie Squares Recipe

Three layers of soft, cakey sugar cookies and sweet blackberry pie filling, topped with a zingy lemon glaze, make these dessert bars absolutely swoon-worthy!

Course: Desserts
Cuisine: American
Servings: 16 squares
Prep Time: 20 mins
Cook Time: 45 mins
Total Time: 1 hr 5 mins
Author: Amanda Davis

Ingredients

1 ¾ cups granulated sugar (400g)
1 cup unsalted butter (2 sticks), softened
4 eggs
1 teaspoon pure vanilla extract
3 cups unbleached all-purpose flour (395g)
1 ½ teaspoons baking powder (5g)
21 ounces blackberry pie filling

Glaze Ingredients

1 ¼ cups powdered sugar (140g)
1 Tablespoon unsalted butter, melted
2-3 Tablespoons fresh lemon juice

Equipment You’ll Need

Stand mixer or hand mixer
15×10 jelly roll pan
Wire cooling racks

Instructions

Preheat oven to 350°F (175°C).
Cream sugar and butter in a mixer on medium speed until fluffy. Add eggs, one at a time, until incorporated. Add the vanilla and beat well.
Whisk together flour and baking powder. Turn mixer speed down to the lowest setting and slowly add the flour mixture until completely combined.
Spread half of the batter onto an ungreased 15×10 inch jelly roll pan. Spread the blackberry pie filling over the top of the batter. Drop the remaining batter onto the pie filling layer by spoonfuls.
Bake for 45 minutes or until golden brown. Do not underbake. Remove to a wire rack to cool.
Combine powdered sugar, melted butter, and lemon juice in a bowl. Drizzle over warm bars.
Allow to cool completely before cutting into squares.

Nutrition Information (per 1 square serving)

Frequently Asked Questions & Expert Tips for Blackberry Pie Squares

Here are some common questions and valuable tips to help you make the best blackberry pie squares possible:

Can I use a different flavor of pie filling?: Absolutely! This recipe is incredibly adaptable. I’ve successfully used it to make cherry pie squares, and I’m confident that other fruit pie fillings like apple, blueberry, peach, or even mixed berry would be just as delicious. Feel free to experiment with your favorite!
How do you store leftover blackberry pie squares?: Store any cooled leftover bars in an airtight container at room temperature for up to 4 days. For longer storage, you can refrigerate them for up to a week. If you plan to freeze them, wrap individual squares tightly in plastic wrap and then aluminum foil. They can be frozen for up to 2-3 months and thawed at room temperature before serving.
Can I make these ahead of time?: Yes, these bars are a fantastic make-ahead dessert. You can bake them a day or two in advance and store them as described above. The flavors often meld and deepen slightly overnight, making them even better!
What if my glaze is too thick or too thin?: The consistency of the glaze is important for a perfect drizzle. If your glaze is too thick, add a very small amount (half a teaspoon at a time) of lemon juice or milk until you reach your desired consistency. If it’s too thin, gradually mix in a spoonful of powdered sugar until it thickens up. Remember to adjust slowly, as a little goes a long way.
Why is cooling completely important before cutting?: Allowing the bars to cool completely is crucial. While warm, the fruit filling is very soft and the cookie layers are delicate. Cooling allows the filling to set and the cookie base to firm up, making the squares much easier to cut into neat portions without crumbling or smearing the layers. Patience will be rewarded with beautiful, perfectly formed squares.

Serving Suggestions: Perfect Pairings for Your Dessert Bars

These versatile blackberry pie squares are delicious on their own, but can also be elevated with a few simple additions. Enjoy them:

As a Dessert: Serve them slightly warm with a scoop of vanilla bean ice cream or a dollop of freshly whipped cream for an indulgent treat.
With Coffee or Tea: They make an excellent accompaniment to your morning coffee or afternoon tea, perfect as a breakfast pastry or an elevated snack.
For a Gathering: Their sturdy nature makes them ideal for potlucks, picnics, or bake sales. Arrange them on a platter for an inviting presentation.
At Room Temperature: While delicious warm, these squares are equally fantastic at room temperature, making them perfect for grab-and-go enjoyment.

Explore More Berry Dessert Recipes

If you love the sweet and tart flavors of berries, you’ll definitely want to try some of these other delightful recipes:

Fluffy Blackberry Scones
Easy Blueberry Dump Cake
Decadent Raspberry Poke Cake
Classic Blueberry Upside Down Cake

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The recipes on this blog are tested with a conventional gas oven and gas stovetop. It’s important to note that some ovens, especially as they age, can cook and bake inconsistently. Using an inexpensive oven thermometer can assure you that your oven is truly heating to the proper temperature. If you use a toaster oven or countertop oven, please keep in mind that they may not distribute heat the same as a conventional full-sized oven and you may need to adjust your cooking/baking times. In the case of recipes made with a pressure cooker, air fryer, slow cooker, or other appliance, a link to the appliances we use is listed within each respective recipe. For baking recipes where measurements are given by weight, please note that results may not be the same if cups are used instead, and we can’t guarantee success with that method.

This post originally appeared here on June 22, 2010 and has since been updated with new photos and expert tips to enhance your baking experience.