These blueberry lemon blondies are a delightful treat! With sweet blueberries and a zesty lemon flavor, they make a perfect snack or dessert.
Making them is a breeze—just mix, bake, and enjoy the burst of fruity goodness. I love having these with my afternoon tea; they add a splash of sunshine to my day! ☀️
Key Ingredients & Substitutions
Unsalted Butter: I prefer using unsalted butter for this recipe, as it allows you to control the saltiness. If you need a dairy-free option, coconut oil or a vegan butter substitute works well.
Granulated Sugar: This sugar helps create the right texture. You could use brown sugar for a richer flavor or coconut sugar as a healthier alternative, but it might change the texture slightly.
Lemons: Fresh lemon juice and zest bring brightness and flavor. If you don’t have fresh lemons, bottled lemon juice can work in a pinch, but fresh is always best for taste.
Blueberries: Fresh blueberries are my top choice for this recipe, but if they’re out of season, frozen blueberries can be used too. Just make sure to thaw and drain them first!
Flour: All-purpose flour is great here, but if you prefer a gluten-free version, a 1:1 gluten-free flour blend would suit this recipe well.
How Do I Get the Perfect Texture for Blondies?
Achieving the perfect texture in blondies isn’t hard, but there are a few steps to remember. The key is in the mixing! Overmixing can lead to tough blondies.
- After adding the dry ingredients, gently fold until just combined.
- Take care not to work the batter too much; some small bits of flour are okay.
- Be mindful of the baking time; check around 30 minutes for doneness, as every oven can vary.

How to Make Blueberry Lemon Blondies
Ingredients You’ll Need:
For the Blondies:
- 1/2 cup (115g) unsalted butter, melted
- 1 cup (200g) granulated sugar
- 2 large eggs
- 1 teaspoon vanilla extract
- Zest of 1 lemon
- 1 tablespoon fresh lemon juice
- 1 1/2 cups (190g) all-purpose flour
- 1/2 teaspoon baking powder
- 1/4 teaspoon salt
- 1 cup fresh blueberries
For the Glaze:
- 1 cup powdered sugar
- 1-2 tablespoons fresh lemon juice
How Much Time Will You Need?
This delicious recipe will take about 15 minutes to prepare and 30-35 minutes to bake. Don’t forget about the cooling time before you add the glaze, which is about 30 minutes. So, all in all, you should plan for about 1 hour and 30 minutes from start to finish, including cooling time!
Step-by-Step Instructions:
1. Prepare to Bake:
Start by preheating your oven to 350°F (175°C). Take an 8×8 inch baking pan and line it with parchment paper. Make sure to leave some paper hanging over the sides—this will help you lift the blondies out later!
2. Mix the Wet Ingredients:
In a large mixing bowl, whisk together the melted butter and granulated sugar until the mixture looks smooth and shiny. This should only take a minute or two. Next, add the eggs one at a time. Make sure to whisk well after each egg. Then stir in the vanilla extract, lemon zest, and fresh lemon juice until everything is well combined.
3. Combine the Dry Ingredients:
In another bowl, whisk together the all-purpose flour, baking powder, and salt. This ensures there are no lumps and helps distribute the leavening evenly throughout the batter.
4. Bring It All Together:
Gradually add the dry ingredients to the wet mixture. Using a spatula, gently fold the two mixtures together until just combined. It’s important not to overmix here—you want your blondies to be soft and chewy!
5. Add the Blueberries:
Now, gently fold in the fresh blueberries. This is what will make your blondies burst with flavor, so make sure they are evenly distributed throughout the batter.
6. Bake:
Pour the batter into your prepared baking pan. Use a spatula to smooth out the top. Bake in your preheated oven for about 30-35 minutes. The blondies are done when the edges are a lovely golden brown and a toothpick inserted in the center comes out clean or with just a few moist crumbs.
7. Cool and Glaze:
Once they’re baked, let the blondies cool in the pan for about 30 minutes. In the meantime, make your lemon glaze. In a small bowl, whisk together the powdered sugar and 1 tablespoon of lemon juice until it reaches a nice drizzle consistency. You can add more lemon juice if you like it thinner.
8. Drizzle and Cut:
Once the blondies are completely cool, drizzle the lemon glaze evenly over the top. Lift them out of the pan using the parchment paper and cut into squares.
9. Enjoy!
Now, it’s time to dig in! Serve your fresh and tangy Blueberry Lemon Blondies and enjoy the deliciousness!
Can I Use Frozen Blueberries?
Yes, you can use frozen blueberries, but make sure to thaw and drain them first to avoid excess moisture in your blondies. Gently fold them into the batter just before baking.
How Do I Store Leftover Blondies?
Store any leftover blondies in an airtight container at room temperature for up to 3 days. If you’d like to keep them longer, they can be refrigerated for up to a week or frozen for up to 3 months.
Can I Use Other Fruits?
Absolutely! Feel free to substitute blueberries with other berries like raspberries or chopped strawberries. Just keep in mind that different fruits may adjust the sweetness and moisture of the blondies slightly.
How Can I Adjust the Sweetness?
If you prefer a less sweet blondie, you can reduce the granulated sugar by 1/4 cup. Keep in mind that the glaze adds sweetness as well, so you may want to adjust the amount of powdered sugar accordingly.



