These blueberry lemon blondies are a tasty treat with a bright, citrusy flavor. They have juicy blueberries mixed into a sweet, buttery batter that just melts in your mouth!
Honestly, they are like sunshine in dessert form! I love serving them warm with a scoop of vanilla ice cream on top. Who can say no to that? 🍦
Key Ingredients & Substitutions
Butter: Unsalted butter gives control over salt content in recipes. If you’re in a pinch, you can use margarine or olive oil, though the flavor might slightly change.
Sugar: Granulated sugar is used for sweetness and texture. You can substitute brown sugar for a richer taste, or use coconut sugar for a healthier option.
Eggs: They provide moisture and bind ingredients. If you’re vegan or allergic, a mixture of 1 tablespoon ground flaxseed and 3 tablespoons water per egg works well.
Blueberries: Fresh blueberries are best for flavor, but frozen blueberries will work too! If you’re in a different season, try substituting with raspberries or blackberries for a fun twist.
What’s the Best Way to Mix Wet and Dry Ingredients?
Mixing wet and dry ingredients correctly is key for soft blondies. First, whisk the dry ingredients together until well combined. Gradually add them to the wet mixture to prevent lumps. Be gentle when folding in the blueberries to keep them whole and vibrant!
- Start by adding a third of the dry ingredients to the wet mix.
- Stir gently until just incorporated, then add more in batches until fully combined.
- Folding in blueberries last helps distribute them evenly without mashing.

How to Make Blueberry Lemon Blondies?
Ingredients You’ll Need:
For the Blondies:
- 1 cup (2 sticks) unsalted butter, melted
- 1 ½ cups granulated sugar
- 2 large eggs
- 2 teaspoons vanilla extract
- 2 cups all-purpose flour
- 1 teaspoon baking powder
- ½ teaspoon salt
- Zest of 2 lemons
- ¼ cup fresh lemon juice
- 1 ½ cups fresh blueberries (plus extra for garnish)
For the Glaze:
- 1 cup powdered sugar
- 1-2 tablespoons lemon juice
How Much Time Will You Need?
This delightful recipe takes about 15 minutes of prep time and 30-35 minutes to bake. After baking, let the blondies cool, and then prepare the glaze. The total time from start to finish is around 1 hour if you include cooling time. Easy and worth every minute!
Step-by-Step Instructions:
1. Preheat and Prepare:
Start by preheating your oven to 350°F (175°C). Grab a 9×9-inch baking pan and line it with parchment paper or give it a light grease to ensure your blondies come out easily once baked.
2. Mix the Wet Ingredients:
In a large mixing bowl, pour in the melted butter and granulated sugar. Stir it well until the mixture is nice and smooth. Now, add the eggs one at a time, mixing thoroughly after each addition. Don’t forget to stir in the vanilla extract!
3. Combine the Dry Ingredients:
In a separate bowl, whisk together the all-purpose flour, baking powder, and salt. Make sure they are well mixed, as this will ensure even distribution in your batter.
4. Combine Wet and Dry Mixtures:
Now, gradually add the dry ingredients to the wet mixture. Gently fold them together until just combined; it’s okay if there are a few lumps. Just don’t overmix!
5. Add Zesty Flavor and Blueberries:
Next, stir in the lemon zest and lemon juice gently, making sure it’s evenly mixed into the batter. Finally, carefully fold in the fresh blueberries, being cautious not to crush them.
6. Bake:
Pour your lovely batter into the prepared baking pan, spreading it out evenly. Pop it into the oven and bake for 30-35 minutes. The edges should turn golden, and when you insert a toothpick in the center, it should come out clean or with just a few moist crumbs.
7. Cool and Glaze:
Once baked, take the blondies out of the oven and allow them to cool in the pan on a wire rack. While they cool, make the glaze by mixing the powdered sugar with 1-2 tablespoons of lemon juice until it’s smooth and a little runny.
8. Drizzle and Serve:
After the blondies have cooled, drizzle the zingy glaze over the top. Garnish with a few extra fresh blueberries for a beautiful presentation. Cut into squares and enjoy your fresh, zesty Blueberry Lemon Blondies!
Can I Use Frozen Blueberries Instead of Fresh?
Absolutely! You can use frozen blueberries in this recipe. Just make sure to fold them in gently while they’re still frozen to prevent them from bleeding into the batter. No need to thaw them first!
How Should I Store Leftovers?
Store any leftovers in an airtight container at room temperature for up to 3 days. If you want to keep them longer, you can refrigerate them, but they may lose some of their freshness. For best taste, enjoy them within a couple of days!
Can I Make This Recipe Gluten-Free?
Yes! You can use a 1:1 gluten-free baking flour to replace the all-purpose flour. This should work well without altering the flavor too much, but be sure to check your flour blend for added ingredients.
What If I Don’t Have Lemons?
In a pinch, you can substitute the lemon juice with an equal amount of vinegar or another citrus juice like lime or orange. The flavor will change slightly, but it can still yield delicious results!



