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    Broken Oven Baking » Recipes » Bars & Bites

    Lemon Blueberry Blondies with Icing

    Published: May 13, 2022 by Kayla Burton · This post may contain affiliate links · 3 Comments

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    Jump to Recipe

    These Lemon Blueberry Blondies with Icing are a bright summer spin on the classic chocolate chip blondie. The batter has a tangy lemon flavor with bursts of juicy blueberries throughout with a sweet, tart lemon cream cheese glaze on top. Add these blueberry blondies to your repertoire for the best summer treat - they're sure to be a hit!

    A hand grabbing a lemon blueberry blondie with lemon cream cheese icing.

    Why We Love This Recipe

    • This easy blondie recipe is easy to riff on. You can substitute other fresh berries or add your favorite nut for a little extra crunch. Try my Raspberry and White Chocolate Blondies for another tasty version!
    • The fruity flavors make these bars perfect for warm weather snacking.
    • These blueberry lemon blondies are easy to pack up and bring to your next picnic or trip to the beach.
    • You can use frozen blueberries in these blondies to make them any time of the year, just like my Blueberry Cake Donuts!

    Looking for more delicious blueberry recipes?

    • Glazed Blueberry Cake Donuts
    • Blueberry Cream Pie Jars
    • Spiced Blueberry Pie
    • White Chocolate Blueberry Muffins
    Jump to:
    • Why We Love This Recipe
    • Ingredients
    • Substitutions & Variations
    • Equipment
    • How to Make Lemon Blueberry Blondies
    • Expert Tips
    • Recipe FAQs
    • Storage
    • More Recipes You'll Love
    • 📖 Recipe
    • 💬 Comments

    Ingredients

    Ingredients needed to make lemon blueberry blondies with lemon cream cheese icing.
    • Unsalted butter will keep these blondies nice and moist while also providing delicious flavor. Measure it, melt it, and let it cool slightly so that it mixes well with the other ingredients (and doesn't cook the egg).
    • Lemon zest is added into the batter and the icing to compliment the sweet fruity flavor in these blueberry blondies. You'll need 1 or 2 medium lemons, washed and zested.
    • Blueberries are the star of this recipe! You can use fresh or frozen. If using fresh blueberries, be extra careful mixing them into the batter since they'll burst much easier than frozen ones. If using frozen blueberries, do not thaw them.
    • Softened cream cheese is mixed into the icing because who doesn't love a delicious lemon cream cheese frosting?

    See recipe card below for full ingredient measurements.

    Substitutions & Variations

    • Make these into raspberry rose blondies by swapping out raspberries for the blueberries and adding ¼ teaspoon rose water in place of the vanilla.
    • For a richer version of these lemon blueberry cookie bars, add in ½ cup white chocolate chips.
    • If you aren't a fan of lemon desserts, turn these into birthday cake blondies by omitting the lemon zest and adding ½ cup rainbow sprinkles to the blondie base and over the top of the glaze.

    This recipe has not been tested with other substitutions or variations. If you replace or add any ingredients, please let us know how it turned out in the comments below!

    Equipment

    This blueberry blondies recipe requires a few simple tools to make the perfect treat.

    • Mixing bowls
    • 8x8 inch square baking pan
    • Parchment paper or aluminum foil
    • A microplane for zesting the lemon

    How to Make Lemon Blueberry Blondies

    Whisking sugar, lemon zest, melted butter, egg and vanilla extract in a bowl.

    Step 1: In a medium bowl, whisk together the sugar, lemon zest, and melted butter until the temperature cools and everything is fully combined, about 2-3 minutes. Then mix in the egg and vanilla extract.

    Blueberries tossed into a flour mixture.

    Step 2: In a separate small bowl, whisk together the flour, baking powder, and salt. Add the blueberries and toss gently to coat.

    Blueberry blondies with lemon in a parchment-lined 8-inch square pan.

    Step 3: Fold the dry ingredients into the wet ingredients until fully combined and no streaks of flour remain. Spread the blondie batter in an even layer into a parchment or greased foil-lined 8x8 inch pan. Bake at 350°F until the edges are tan, about 25-30 minutes. Place the pan on a wire rack and cool completely.

    Whisking lemon cream cheese icing in a small bowl.

    Step 4: To make the icing, mix powdered sugar, softened cream cheese, lemon zest, and milk in a separate bowl until smooth. Drizzle icing over the cooled blondies and allow to set.

    Expert Tips

    Tip #1 - It's important to allow the melted butter to cool slightly before adding your egg to make sure the egg don't scramble in your batter! Mixing it into the sugar will help cool it down, but still check that it's cool enough before adding the egg. A good way to test the temperature is to feel the outside of the bowl - it should be at or slightly above room temperature but not hot to the touch.

    Tip #2 - Tossing the blueberries in the dry mixture before mixing in with the wet ingredients helps ensure the blueberries are evenly distributed throughout your blondies and won't all sink to the bottom.

    Tip #3 - Leave a 2-3 inch overhang of parchment or foil on at least 2 sides of the pan to help you easily lift the blueberry bars out before cutting. This is sometimes referred to as a parchment sling!

    Recipe FAQs

    What is the difference between a blondie and a brownie?

    Blondies and brownies are both cookie bars with one key difference - chocolate. Brownies use melted chocolate and/or cocoa powder in the batter while blondies don't have chocolate mixed throughout the batter.

    Are blondies supposed to be gooey?

    These blondies are more dense and fudgy and less cakey. The center may be slightly gooey but should not be runny.

    What is lemon zest?

    Lemon zest is the very outer part of the lemon peel that contains natural oils that hold lemon flavor. After washing and drying your lemons, use a zester to grate the zest off of the lemon.

    Top view of lemon blueberry blondies cut into squares.

    Storage

    Room Temperature: The lemon blueberry blondies without icing can be stored on the counter in an airtight container for up to 5 days.

    Refrigerator: Store in an airtight container for up to 1 week in the refrigerator.

    Freezer: Before icing, store cooled, baked blondies in the freezer in an airtight container for up to 2 months. When ready to eat, bring the blondies to room temperature and drizzle icing over the top.

    More Recipes You'll Love

    • Raspberry and White Chocolate Blondies
    • Glazed Blueberry Cake Donuts
    • White Chocolate and Blueberry Muffins
    • Easy Raspberry Cream Cheese Danish Recipe

    Did you try this recipe? I'd love to see it! Tag @brokenovenbaking on Instagram & Facebook and leave a ⭐️ review below!

    📖 Recipe

    Lemon Blueberry Blondies with Icing

    Kayla Burton
    Lemon blueberry blondies are a refreshing fruity dessert with lemon cream cheese icing! They're quick, easy & perfect for any occasion!
    5 from 13 votes
    Print Recipe Pin Recipe Save for LaterSaved!
    Prevent your screen from going dark
    Prep Time 15 mins
    Cook Time 25 mins
    Total Time 40 mins
    Course Dessert
    Cuisine American
    Servings 16 bars
    Calories 142 kcal

    Equipment

    • 8 inch square pan
    • Parchment paper or aluminum foil recommended
    • Mixing bowls
    • Scale/measuring spoons
    • Measuring cups
    • Zester
    • Whisk
    • Spatula
    • Wire cooling rack
    U.S. Cups vs MetricToggle between US Customary and Metric measurements

    Ingredients
     
     

    Lemon Blueberry Blondies

    • ¾ cup granulated sugar
    • 1 teaspoon lemon zest packed
    • ½ cup unsalted butter melted, warm
    • 1 large egg room temperature
    • 1 teaspoon vanilla extract
    • 1 cup all-purpose flour weighed in grams or spooned & leveled
    • ½ teaspoon baking powder
    • ¼ teaspoon salt
    • 1 cup blueberries fresh or frozen

    Lemon Cream Cheese Icing (Optional)

    • ½ cup powdered sugar
    • 1 teaspoon cream cheese softened
    • ¼ teaspoon lemon zest
    • 1 tablespoon milk

    Instructions
     

    Lemon Blueberry Blondies

    • Preheat oven to 350°F/177°C and line an 8x8 inch pan with parchment or foil, extending up and over the sides (if using foil or just the pan, grease lightly with baking spray or butter).
    • In a large bowl, whisk together the sugar, lemon zest and warm melted butter until the mixture is room temperature and homogenous (2-3 minutes). Stir in the egg and vanilla extract well.
    • In a medium bowl, combine the flour, baking powder and salt. Toss in the blueberries to lightly coat them in the mixture.
    • Fold the dry ingredients into the wet ones and then carefully press the thick batter into the bottom of the prepared pan.
    • Bake on the middle rack until the edges are tan and the center looks mostly set (about 25-30 minutes). Let them cool in the pan and then lift them out by grabbing the sides of the parchment. Finish cooling on a wire rack.

    Lemon Cream Cheese Icing (Optional)

    • In a small bowl, whisk together the powdered sugar, cream cheese, lemon zest and milk until smooth. Drizzle on top of the cooled blondies for an extra sweet treat!

    Notes

    Lemon Zest: The zest is the outer yellow part of the lemon taken off with a fine grater (also known as zester or microplane).
    Storage: Unglazed blondies can be stored at room temperature for up to 5 days, otherwise store in the refrigerator for up to 1 week or freezer for up to 2 months.

    Nutrition

    Calories: 142kcalCarbohydrates: 21gProtein: 1gFat: 6gSaturated Fat: 4gPolyunsaturated Fat: 1gMonounsaturated Fat: 2gTrans Fat: 1gCholesterol: 27mgSodium: 57mgPotassium: 24mgFiber: 1gSugar: 14gVitamin A: 205IUVitamin C: 1mgCalcium: 14mgIron: 1mg

    The provided nutritional information is an estimate per serving. Accuracy is not guaranteed.

    Tried this recipe?Leave a comment below & tag @brokenovenbaking on social!

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    Reader Interactions

    Comments

    1. Brooke Testerman

      April 16, 2023 at 11:54 am

      Does the glaze harden?

      Reply
      • Kayla Burton

        April 17, 2023 at 12:35 pm

        It should get dry but not very hard

        Reply
    2. Paula

      June 14, 2022 at 10:37 am

      5 stars
      I made these for some friends recently and they were super moist and delicious. Blueberries and lemon are a great combo and these blondies will become a regular recipe for me!

      Reply

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    Kayla Burton of Broken Oven Baking Company.

    Hey, I'm Kayla!

    I'm a self-taught baker, recipe developer & food photographer in Chicago. I created this blog to share simple, sweet recipes that bakers of any level can enjoy! I hope you find your new favorite brunch or dessert recipe here! If you have any questions or want to connect, I'd love to hear from you!
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