These yummy blackberry lemon squares are a perfect mix of sweet and tangy. With a buttery crust and a fruity filling, they’re sure to brighten your day!
When I make these, I can’t help but sneak a corner piece. You know those moments when you think, “just one more bite”? This is definitely one of those times! 😊
I love to enjoy my squares with a cup of tea. It makes for a lovely afternoon treat! Plus, they’re super easy to whip up for friends or family gatherings!
Key Ingredients & Substitutions
All-Purpose Flour: This is key for both the crust and the lemon layer. If you’re looking for a gluten-free option, try using a 1:1 gluten-free flour blend. I find that the texture remains great with this swap!
Unsalted Butter: It’s best to use unsalted butter so you can control the saltiness of your recipe. If you’re dairy-free, coconut oil or a plant-based butter can work nicely as substitutes.
Fresh Lemon Juice and Zest: Fresh lemons give the best flavor! If you don’t have lemons, try bottled lemon juice, though fresh is always better. I love the zest for that extra burst of lemony brightness.
Blackberries: Fresh blackberries are ideal, but you can use frozen ones too. Just allow them to thaw and drain any excess juice! Raspberries can also be a delicious alternative if you prefer.
Heavy Cream: For whipping, heavy cream is important for texture. If you’re looking for a lighter option, try using coconut cream or a non-dairy whipped topping.
Why is the Crust So Important and How Do I Get It Just Right?
The crust is the foundation of your lemon squares, so you want it to be both firm and light. Make sure to mix the butter with the dry ingredients until it looks like coarse crumbs. Press it firmly into the pan to create a solid base without overpacking.
- It’s best to bake the crust until it’s lightly golden to get a nice crisp texture.
- Keep an eye on it after 15 minutes to avoid overbaking!
How Can I Ensure My Lemon Layer is Perfectly Set?
For the lemon layer, you want it to be slightly jiggly in the center when you take it out of the oven. This is a sign that it’s cooked but still creamy. Set a timer and check around the 20-minute mark, keeping in mind that it will firm up as it cools.
What’s the Best Way to Prepare and Use Blackberries?
When cooking blackberries for the topping, taking the time to break them down in the saucepan helps release moisture and sweetness. Stir frequently as it cooks, and remember that a little thickness from cornstarch will help bind it. Let it cool before spreading it over your lemon layer for a beautiful finish!
These tips will help you make the best Blackberry Lemon Squares, ensuring success in each layer. Enjoy making and sharing these tasty treats!

How to Make Blackberry Lemon Squares
Ingredients You’ll Need:
For the Crust:
- 1 1/2 cups all-purpose flour
- 1/2 cup unsalted butter, softened
- 1/4 cup granulated sugar
- 1/4 tsp salt
For the Lemon Layer:
- 1 cup granulated sugar
- 2 large eggs
- 1/4 cup fresh lemon juice (about 1-2 lemons)
- 2 tbsp all-purpose flour
- 1/2 tsp baking powder
- Zest of 1 lemon
For the Blackberry Layer:
- 2 cups fresh blackberries
- 1/3 cup granulated sugar
- 1 tbsp lemon juice
- 1 tbsp cornstarch
For the Topping:
- 1 cup heavy cream
- 2 tbsp powdered sugar
- 1/2 tsp vanilla extract
- Fresh blackberries for garnish
- Powdered sugar for dusting (optional)
How Much Time Will You Need?
This delightful recipe takes about 15 minutes of prep time and about 1 hour to chill before serving. You’ll spend around 1 hour baking and cooling the layers and then another 10-15 minutes whipping the cream and garnishing. So, get ready to enjoy over 2 hours of tasty anticipation!
Step-by-Step Instructions:
1. Preparing the Crust:
First, preheat your oven to 350°F (175°C). In a medium mixing bowl, combine the all-purpose flour, granulated sugar, and salt. Cut in the softened butter using a pastry cutter or your fingers until the mixture looks like coarse crumbs. Now, press the mixture evenly into the bottom of a greased or parchment-lined 8×8 inch baking pan. Bake in the preheated oven for 15-18 minutes, or until it’s lightly golden. Once done, remove it from the oven and set it aside to cool.
2. Making the Lemon Layer:
In a separate bowl, whisk together the sugar, eggs, fresh lemon juice, all-purpose flour, baking powder, and lemon zest until everything is smooth and well combined. Now pour this lovely mixture evenly over the baked crust. Pop it back into the oven and bake for about 20 minutes, or until the lemon layer is set but still a bit jiggly in the center. Once baked, take it out and let it cool to room temperature.
3. Preparing the Blackberry Topping:
While waiting for the lemon layer to cool, you can make the blackberry topping. In a saucepan, mix the fresh blackberries, granulated sugar, lemon juice, and cornstarch. Cook this over medium heat, stirring frequently, until the mix thickens and some of the blackberries break down. This should take about 7-10 minutes. Once done, let it cool to room temperature, then spread the blackberry mixture evenly over the cooled lemon layer.
4. Making the Whipped Cream Topping:
Now, let’s make the whipped cream! In a chilled mixing bowl, whip the heavy cream with powdered sugar and vanilla extract until stiff peaks form. You can use a piping bag or a spoon to dot or layer the whipped cream on top of the blackberry layer all fancy-like.
5. Garnish and Serve:
Finally, it’s time to garnish! Add fresh blackberries on top and, if you like, dust with powdered sugar for that extra special touch. Remember to refrigerate the squares for at least 1 hour before slicing and serving, so all the layers set perfectly. Enjoy your fresh, tangy, and sweet Blackberry Lemon Squares!
Can I Use Frozen Blackberries Instead of Fresh?
Yes, you can use frozen blackberries! Just make sure to thaw them beforehand and drain any excess liquid before cooking. This will help prevent the topping from becoming too watery.
How Should I Store Leftover Blackberry Lemon Squares?
Store any leftover squares in an airtight container in the fridge for up to 3 days. To keep the whipped cream fresh, you might want to add it just before serving.
Can I Substitute the Heavy Cream in the Topping?
Absolutely! If you’re looking for a lighter option, you can substitute heavy cream with coconut cream or a non-dairy whipped topping. Just whip it until stiff peaks form as you would with regular cream.
What If My Lemon Layer Doesn’t Set Properly?
If the lemon layer doesn’t seem to set completely, it may need more time in the oven. Just keep an eye on it—if it’s still slightly jiggly, that’s fine as it will firm up as it cools. If it’s undercooked, you can return it to the oven for a few more minutes.
