These Blackberry Lemon Squares are a fruity and tangy treat that brightens your day! With a crumbly crust and a zesty lemon filling topped with fresh blackberries, they are simply delicious!
The best part? They are easy to make and great for sharing with friends! I love having them as a snack or dessert, and they always get a smile from everyone. Who could resist that berry goodness? 😊
Key Ingredients & Substitutions
Butter: Unsalted butter is perfect for the crust as it gives a creamy texture. You can use coconut oil or margarine for a dairy-free version. Just keep the same measurement!
Lemon juice: Fresh lemon juice is best for a bright, zesty flavor, closely followed by fresh zest. If you don’t have fresh lemons, bottled lemon juice works too, but it won’t be as vibrant.
Blackberries: Fresh blackberries are ideal, but if they are out of season, frozen blackberries can work well. Just ensure they’re thawed and drained before use.
Eggs: Large eggs are crucial for binding the lemon layer. If you’re looking for an egg substitute, try using flax eggs (1 tablespoon ground flaxseed mixed with 2.5 tablespoons water for each egg) or applesauce (1/4 cup per egg) for a healthier option.
Cream of tartar: This helps stabilize the meringue. If you don’t have it on hand, you can leave it out, but the meringue may not be as stable.
How Do I Get My Meringue Topping Just Right?
Making a fluffy meringue can seem tricky, but it’s simpler than you think! The key to perfect meringue is ensuring that your bowl and whisk are clean and free of grease.
- Start with room temperature egg whites for better volume.
- Add cream of tartar at the beginning; it helps stabilize the meringue.
- Beat the egg whites on medium speed until soft peaks form, which means they should bend over softly when you lift the whisk.
- Gradually add sugar while beating; this allows the sugar to dissolve and creates a glossy finish. Beat until stiff peaks form, standing straight up.
When topping your bars, don’t worry about making it perfect—swirls and peaks can look beautiful when browned under heat!
How to Make Delicious Blackberry Lemon Squares
Ingredients You’ll Need:
For The Crust:
- 1 cup (2 sticks) unsalted butter, softened
- 1/2 cup granulated sugar
- 2 cups all-purpose flour
- 1/4 teaspoon salt
For The Lemon Layer:
- 1 cup fresh lemon juice (about 4-5 lemons)
- 1 tablespoon lemon zest
- 1 cup granulated sugar
- 3 large eggs
- 1/4 cup all-purpose flour
For The Blackberry Layer:
- 2 cups fresh blackberries
- 1/3 cup granulated sugar
- 1 tablespoon lemon juice
- 1 tablespoon cornstarch
For The Meringue Topping:
- 3 large egg whites
- 1/2 cup granulated sugar
- 1/4 teaspoon cream of tartar
Garnish:
- Fresh blackberries (for topping)
- Powdered sugar (for dusting)
How Much Time Will You Need?
This delightful recipe takes about 15 minutes of prep time, plus 45 minutes to bake, and at least 2 hours of chilling time. So in total, you’re looking at around 3 hours, including cooling and setting. The wait is worth it—you’ll end up with a stunning dessert that’s sure to impress!
Step-by-Step Instructions:
1. Preheat Oven and Prepare Your Pan:
Start by preheating your oven to 350°F (175°C). Grab a 9×9 inch baking pan and line it with parchment paper, leaving some overhang on the sides. This will help you lift out the bars easily later on.
2. Make the Crust:
In a large mixing bowl, cream together the softened butter and 1/2 cup of sugar using a mixer until it’s light and fluffy. Gradually mix in the 2 cups of flour and 1/4 teaspoon of salt until a dough forms. It should be moist but not sticky!
3. Bake the Crust:
Press the dough evenly into the bottom of your prepared pan. Bake it for about 18-20 minutes, or until it turns lightly golden. When done, remove it from the oven and set it aside to cool.
4. Prepare the Lemon Layer:
In a bowl, whisk together the fresh lemon juice, lemon zest, 1 cup of sugar, eggs, and 1/4 cup of flour until everything is combined and smooth. This will create a refreshing lemon filling!
5. Prepare the Blackberry Layer:
In a small saucepan, mix the blackberries, 1/3 cup sugar, lemon juice, and cornstarch. Cook this over medium heat, stirring often, until the berries break down and the mixture thickens—this should take about 5-7 minutes. Once thickened, strain the mixture through a fine mesh sieve to remove the seeds and let it cool a bit.
6. Assemble the Lemon and Blackberry Layers:
Pour the lemon mixture over your baked crust and spread it out evenly. Then carefully spoon the blackberry mixture on top, spreading it gently without disturbing the lemon layer.
7. Bake Again:
Return the pan to the oven and bake for another 20-25 minutes, or until the lemon layer is set. You want it to feel firm to the touch!
8. Make the Meringue:
While the bars are baking, grab a clean mixing bowl and beat the egg whites with cream of tartar until soft peaks form. Gradually add in the sugar while beating until stiff, glossy peaks form—this should take a few minutes!
9. Top with Meringue:
Once the bars are out of the oven, scoop dollops or pipe the meringue evenly over the top. If you have a kitchen torch, now’s the time to use it! Otherwise, place the bars under the broiler for about 1-2 minutes to lightly brown the meringue, but keep a very close eye on it to avoid burning!
10. Cool and Garnish:
Let your bars cool completely to room temperature. Then pop them into the fridge for at least 2 hours to set properly. Once chilled, remove from the pan using the parchment overhang, cut into squares, and top each square with a fresh blackberry and a dusting of powdered sugar.
Enjoy your delicious Blackberry Lemon Squares with friends and family!
Can I Use Frozen Blackberries Instead of Fresh?
Yes, you can use frozen blackberries! Just make sure they are fully thawed and drained before cooking. This will help avoid excess moisture in your blackberry layer.
Can I Prepare the Bars in Advance?
Absolutely! You can make these bars a day ahead. Just store them tightly covered in the refrigerator after they have chilled completely to allow the flavors to meld wonderfully.
What Should I Do If My Meringue Isn’t Holding Peaks?
If your meringue isn’t forming stiff peaks, it might be due to grease on your mixing bowl or utensils. Ensure everything is clean and free of any fat. Also, make sure your egg whites are at room temperature for better volume!
How Do I Store Leftover Blackberry Lemon Squares?
Store any leftovers in an airtight container in the refrigerator for up to 3 days. Enjoy them chilled, or bring them to room temperature before serving for the best flavor!
