Desserts / Cookies, bars & fudge
Brown Butter Blondies with a Crackly Top
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Brown the butter until the kitchen smells nutty and warm, then whisk, stir and bake. Let them cool all the way before you cut, and keep an eye on the hands that hover over the pan.
The short version
Brown a stick of butter, whisk in brown sugar, an egg and a yolk, then fold in flour and chocolate chips. Bake in an 8-inch pan at 350°F for 22 to 28 minutes, until the top is shiny and the center is just set. Cool completely before you cut.
What makes ours better
the tricks Nonna pretends she never taught me
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Brown the butter. Browned butter tastes of toffee and toasted nuts, which is exactly what a blondie should taste like. It takes about five minutes in the same pan you'll mix in.
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Add an extra yolk. The yolk adds richness and chew without making the blondie cakey. It's what keeps the center dense and fudgy.
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Whisk the eggs and sugar for a full minute. Beating the sugar into the eggs dissolves it and builds the thin, shiny, crackly crust on top.
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Pull them while the center is soft. Blondies set as they cool. Take them out when the edges are firm and the middle still looks a touch underdone, and they stay chewy instead of dry.
What you need
the cast, in order of appearance
- Unsalted butter½ cup
- Packed light brown sugar¾ cup
- Granulated sugar¼ cup
- Egg1 large
- Vanilla extract1 tablespoon
- All-purpose flour1 cup
yes, all of the butter
Steps
nobody opens the oven door. looking at you, Dad.
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Heat the oven, line the pan
Set a rack in the middle of the oven and heat it to 350°F. Grease an 8-inch square pan and line it with parchment that hangs over two opposite sides.
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Brown the butter
Melt the butter in a medium saucepan over medium heat. Once it foams, stir often. In 4 to 6 minutes the foam subsides, the milk solids on the bottom turn the color of a hazelnut, and it smells like toffee. Pour it, brown bits and all, into a large bowl and let it cool for 10 minutes.
Use a light-colored pan so you can see the butter change color. Pull it as soon as it smells nutty.
About 5 min. Cook mode has a timer for this step.
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Whisk in the sugars
Whisk the brown sugar and granulated sugar into the warm butter until the mixture looks like wet sand.
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Add the eggs
Whisk in the egg, the yolk, the vanilla and the salt. Keep whisking for a full minute, until the batter is thick, glossy and a shade paler.
If the butter is still hot, the egg will start to cook. It should feel just warm.
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Fold in the flour
Sprinkle the flour and baking powder over the batter and fold with a rubber spatula until no streaks of flour remain. Fold in half the chocolate chips and the pecans, if you're using them. The batter will be thick.
Stop as soon as the flour disappears. Extra stirring makes blondies tough and dry.
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Pan and top
Scrape the batter into the pan and press it into the corners with the spatula. Scatter the remaining chips over the top.
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Bake
Bake for 22 to 28 minutes, until the edges are set and golden, the top is shiny and crackly, and a toothpick in the center comes out with a few moist crumbs. Sprinkle with flaky salt right away.
A clean toothpick means they're overbaked. Pull them a minute earlier than you think you should.
About 22 min. Cook mode has a timer for this step.
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Cool completely
Cool in the pan on a rack for at least 1 hour, until firm. Lift out with the parchment and cut into 16 squares with a sharp knife.
Good to know
things I learned the hard way, so you can skip that part
- Room-temperature eggs mix into the butter more smoothly. Set them in a bowl of warm tap water for 5 minutes if you forgot.
- The sugar will look sandy at first. That's normal; it comes together when you add the eggs.
- Brown sugar is the flavor here. Light and dark both work; dark brown is deeper and more molasses-y.
- Storage. Airtight at room temperature, 4 days. Wrapped well in the freezer, 2 months; thaw at room temperature.
Questions, answered
the questions my cousins text me
Why are my blondies cakey?
Too much flour or too much mixing. Spoon the flour into the cup and level it, or weigh it, and fold only until it disappears. The extra yolk also helps keep them dense.
Do I have to brown the butter?
No. Plain melted butter works and the blondies are still good. Browned butter gives them a toffee flavor that makes them taste like more than a plain brown sugar bar.
How do I know when blondies are done?
The edges are set and golden, the top is shiny, and a toothpick in the center comes out with moist crumbs, not wet batter. They finish setting as they cool.
Why don't my blondies have a crackly top?
The sugar didn't dissolve into the eggs. Whisk the eggs, sugar and butter for a full minute until thick and shiny, and keep the butter just warm.
Can I double the recipe?
Yes, in a 9×13-inch pan. Bake a few minutes longer and go by the cues, shiny top and moist crumbs on a toothpick, not the clock.
What's the difference between a blondie and a brownie?
Blondies get their flavor from brown sugar and butter instead of chocolate. They taste like butterscotch and vanilla, with a chewy, dense crumb.
From the table
Made it? Tell me how it went, and who went back for seconds when they thought nobody was looking.
Made it?
be honest. I can take it. probably.
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Published October 29, 2026.