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White Chocolate Blondies are chewy, butterscotch flavored bars made in one bowl, loaded with creamy white chocolate chips and bursts of fresh blueberry in every square. I baked a pan on a rainy spring afternoon and Lizzie renamed them blueberry muffin brownies before they even cooled. If fruit and chocolate in a bar is your thing, my raspberry brownies are the fudgy chocolate version of this exact idea.
Brown sugar and melted butter give these bars their deep butterscotch chew with zero mixer required.
White Chocolate Blondies Quick Look
- 🕒 Prep Time: 15 minutes
- 🌡️ Cook Time: 35 minutes
- ⏳ Total Time: 50 minutes
- 🍽️ Serving: 9 servings
- ⚡ Calories: 339kcal
- 🌶️ Flavor Profile: Butterscotch chew with creamy white chocolate and juicy blueberries
- ✋ Difficulty: Very easy, one bowl and a spoon, even simpler than my chocolate chip cookie bars
Quick Answer
Mix melted salted butter, brown sugar, one egg, and vanilla in a large bowl until combined. Add the flour and baking powder and mix well, then stir in the white chocolate chips and gently fold in the fresh blueberries. Spread the batter in a greased, parchment lined 9×9 pan and bake at 350 degrees F for 30 to 35 minutes, until the top is golden and a toothpick comes out with moist crumbs. Cool completely in the pan before cutting into squares, and simmer extra blueberries with sugar and water for an optional warm sauce.
Jump to:
- White Chocolate Blondies Quick Look
- Quick Answer
- Why This Recipe Works
- Why You’ll Love This Recipe
- Key Ingredients
- Variations and Substitutions
- How to Make White Chocolate Blondies
- Recipe Tips & Tricks
- Serving Ideas and Suggestions
- White Chocolate Blondies FAQs
- Other Recommended Brownie and Bar Recipes
- White Chocolate Blondies
Why This Recipe Works
Click to see the technique science
- Melted butter means maximum chew. Skipping creamed butter keeps the crumb dense and fudgy, which is exactly what separates a blondie from yellow cake.
- All brown sugar builds the butterscotch. A full cup and a quarter of brown sugar brings molasses depth that granulated sugar simply cannot deliver.
- One egg keeps them bars, not cake. Blondies need just enough structure to hold together, more eggs would lift and dry the crumb.
- White chocolate loves blueberries. The creamy sweet chips balance the tart pop of fresh berries, the same pairing that makes blueberry cheesecake work.
- A tablespoon of vanilla is not a typo. Blondies lean on vanilla for their signature flavor, so a generous pour carries the whole batch.
- Moist crumbs mean stop baking. Pulling the pan when the toothpick shows moist crumbs, not clean, keeps the centers gooey as they set.
Why You’ll Love This Recipe
- One bowl, no mixer, and the batter comes together faster than the oven preheats.
- Every square hits sweet, tart, chewy, and creamy at the same time.
- They scratch the same sweet itch as my lemon brownies but with juicy berries in every bite.
Key Ingredients
Simple pantry staples, one bowl, and two stars: white chocolate and blueberries.
- Salted Butter: The flavor base. Melted, not creamed, for that signature dense and chewy blondie texture.
- Light Brown Sugar: The butterscotch engine. Its molasses gives blondies their caramel depth and soft chew.
- White Chocolate Chips: The creamy sweetness. They half melt into the batter leaving pockets of vanilla richness.
- Fresh Blueberries: The juicy pop. Folded in gently so they stay whole and burst when you bite.
- Vanilla Extract: The backbone. A full tablespoon flavors the whole pan, blondies live and die by their vanilla.
See recipe card for exact quantities.
Variations and Substitutions
This one bowl batter takes swaps like a champ.
- Raspberry swap: Fresh raspberries bring a sharper tang that loves the white chocolate just as much.
- Lemon zest lift: A teaspoon of zest in the batter turns them into blueberry lemon bars.
- Nutty crunch: A half cup of chopped macadamias or pecans adds toasty texture.
- Coconut version: Swap a quarter cup of flour for shredded coconut for a tropical chew.
- Go full chocolate: Skip the berries and stir in dark chocolate chunks, or bake my frosted brownies when the craving turns cocoa.
How to Make White Chocolate Blondies
- Preheat the oven to 350 degrees F and grease a 9×9 baking pan, then line it with parchment paper. In a large bowl, mix the melted butter, brown sugar, egg, and vanilla until fully combined.
- Add the flour and baking powder to the bowl and mix well, scraping down the sides as needed. The batter will be thick.
- Stir in the white chocolate chips until they are evenly scattered through the batter.
- Add the fresh blueberries and fold them in gently so they stay whole and do not streak the batter purple.
- Pour the batter into the prepared pan and smooth the top into an even layer.
- Bake for 30 to 35 minutes, until the top is golden and a toothpick comes out with moist crumbs. Cool completely in the pan, then cut into squares. For the optional sauce, simmer the extra blueberries with the water and sugar for about 5 minutes and spoon it over each square.
Recipe Tips & Tricks
- Cool the melted butter slightly. Piping hot butter scrambles the egg, warm butter makes a silky batter.
- Fold the berries last and gently. Aggressive stirring bursts them and turns the whole pan gray.
- Dry the blueberries well. Wet berries add steam that leaves soggy pockets around the fruit.
- Use the parchment sling. Lifting the whole slab out makes clean cuts easy and saves your pan.
- Underbake by instinct, not fear. Moist crumbs on the toothpick at 30 minutes beat a dry pan at 40.
- Chill before cutting for sharp edges. Twenty minutes in the fridge firms the crumb for picture perfect squares.
Serving Ideas and Suggestions
These white chocolate blondies fit everywhere from lunchbox treats to the Mothers Day brunch table, and the warm blueberry sauce dresses them up for company. Slice them small and set them on a tray with my Oreo balls for an easy dessert board.
A bar tray with variety always empties fastest. My cosmic brownie cookies bring the nostalgia factor to the same spread. For a citrus counterpoint, my lemon cheesecake bars are the bright bite between rich ones.
Serve them slightly warm with vanilla ice cream and a spoonful of the blueberry sauce, or cold from the fridge with coffee, they are honestly great both ways. And warm, my mocha nut brownies with a scoop of ice cream end the night right.
White Chocolate Blondies FAQs
Blondies are the vanilla butterscotch twin of the brownie. Instead of cocoa and melted chocolate, white chocolate blondies build their flavor on brown sugar, butter, and vanilla, then add creamy white chips for richness. The texture is the same dense, fudgy chew you want from a brownie, just in golden form with a caramel like flavor instead of chocolate.
Yes, but do not thaw them first. Toss the frozen berries in a teaspoon of flour and fold them in straight from the freezer, which keeps them from bleeding purple streaks through the batter. Expect to add 3 to 5 extra minutes of bake time since the cold berries cool the batter down. Fresh berries are still my first choice for texture.
Look for a golden top, set edges pulling slightly from the pan, and a toothpick that comes out with moist crumbs rather than wet batter, usually at 30 to 35 minutes. A completely clean toothpick means they are already overbaked and will set up dry. The center firms as the pan cools, so trust the moist crumb test and resist the urge to bake to a clean pick.
Because of the fresh blueberries, store the cut bars in an airtight container in the refrigerator for up to 4 days, with parchment between layers so the tops stay pretty. Let them sit at room temperature for 15 minutes before serving, or warm them for 10 seconds in the microwave. Without berries a blondie keeps on the counter, but the fruit makes the fridge the safe call.
Absolutely. Cool the slab completely, cut it into squares, and freeze them on a tray until solid before moving to a freezer bag for up to 3 months. Thaw at room temperature for about an hour or microwave a single bar for 20 seconds. Make the blueberry sauce fresh when serving, it takes 5 minutes and does not freeze as nicely as the bars do.
Cakey white chocolate blondies usually mean too much flour or too much mixing. Spoon and level the flour rather than scooping, since a packed cup adds several extra tablespoons. Mix just until the flour disappears, overmixing develops gluten and lightens the crumb toward cake. The batter should be thick and heavy, if it pours like cake batter, the ratio is off.
Made these white chocolate blondies? Leave a comment and a star rating below, and tell me if you went team warm sauce or team cold from the fridge!
White Chocolate Blondies
Ingredients
- 1/2 cup salted butter melted
- 1 1/4 cups light brown sugar packed
- 1 large egg
- 1 tablespoon vanilla extract
- 3/4 cup all-purpose flour
- 1 teaspoon baking powder
- 1/2 cup white chocolate chips
- 1 cup fresh blueberries
Optional blueberry sauce to serve:
- 1 cup fresh blueberries
- 2 tablespoons water
- 2 tablespoons granulated sugar
Instructions
- Preheat the oven to 350°F. Grease a 9×9 baking pan and line it with parchment paper.
- In a large bowl, mix the melted butter, brown sugar, egg, and vanilla until combined.1/2 cup salted butter, 1 1/4 cups light brown sugar, 1 large egg, 1 tablespoon vanilla extract
- Add the flour and baking powder to the mixture. Mix well, scrape down the sides as needed.3/4 cup all-purpose flour, 1 teaspoon baking powder
- Stir in the chocolate chips.1/2 cup white chocolate chips
- Finally, add the fresh blueberries to the mixture and gently stir to distribute them evenly.1 cup fresh blueberries
- Pour the batter into the prepared baking dish and smooth out the top.
- Bake in the preheated oven for 30-35 minutes or until the top is golden or until a toothpick inserted into the center comes out mostly clean with moist crumbs.
- Once baked, remove it from the oven and let it cool completely in the pan on a wire rack.
- Once the blondies are completely cool, cut them into squares.
- Optional blueberry sauce to serve: Add the fresh blueberries, water, and sugar to a small sauce pot. Place over medium heat, stirring constantly, breaking up the blueberries until a sauce forms, about 5 minutes. Serve with the blondies if desired.1 cup fresh blueberries, 2 tablespoons water, 2 tablespoons granulated sugar
Notes
- Line your prepared pan with parchment paper for easy removal and clean cuts.
- Don’t overmix the blondie batter to ensure a chewy texture in every bite.
- For an extra rich flavor, consider using brown butter instead of regular melted butter.
- Adding an extra egg yolk can make your blondies even more tender and chewy.
- Let your blondies cool in the pan before cutting to get perfect squares.
- Experiment with mix-ins and toppings to discover your favorite version of this delicious white chocolate blondies recipe.
Nutrition
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