Brownie Brittle with Candied Walnuts

With an Asian twist

If I told you that today’s recipe is for dried-out brownies, I wouldn’t blame you if your finger was hovering over the keyboard, ready to click away. Look, I like soft, moist, chocolatey brownies as much as the next guy. (Perhaps even more.) But this is one of the most surprising recipes I’ve come across, and one that I wasn’t expecting to like as much as I did.

It’s from a new book, 108 Asian Cookies by Kat Lieu whose subtitle will likely resonate with quite a few of you: Not-Too-Sweet Treats from a Third-Culture Kitchen, and I was intrigued by the idea of Asian cookies.

Flipping through the book, I found that quite a few of the recipes are variations of Western favorites, which is where the third culture comes in. There are Linzer cookies accented with yuzu, Lace cookies get drizzled with miso caramel, Thai basil perfumes Chocolate sandwich cookies, and Red velvet brownies are spiced up with doubanjiang, Chinese fermented bean paste.

I’d bookmarked a few recipes but the Chocolate brownie brittle with candied walnuts stood out, partially because I had all the ingredients on hand, and partially because I’m drawn to crispy foods, even when the moniker is applied to brownies. I couldn’t imagine how a crackly, uber-thin brownie could satisfy my chocolate cravings. I like very dark chocolate desserts yet wasn’t sure something as thin as a coin could give me the same pleasure as a dense, chewy brownie. But I was proved wrong.

My first batch, with candied pecans.

My first reaction to them, coming out of the oven was, “Um…okay…” The brittle looked like dried-out shards of chocolate batter.

Then I took a taste and wow — was that good!

Like a number of recipes in the book, this one called for a tablespoon of Japanese whisky in the brownie batter and a tablespoon of miso in the glazed walnuts. I’m not sure if I could discern a difference if I omitted that small amount, or maybe my palate isn’t as acute as other people’s. But you can take matters into your own hands and Kat offers up bourbon as an alternative to the Japanese whisky, which I didn’t have on hand (but I’ve got plenty of other whiskys), and I do have white miso, which I swapped for the red miso called for in the walnuts. But I also tried the candied walnuts with soy sauce in place of the miso, which works, too.

I tend to use dark cocoa powder (Valrhona or Cacao Barry extra brute) when I bake because I don’t believe you can have too much chocolate flavor. But when you use it, things’ll come out darker, and you risk people seeing your pictures and saying, “Hey, that’s burnt.” I’m not sure if comments like that are meant to be helpful, or what. But if you don’t know what you’re talking about, it’s probably best not to say anything.

For the first try (shown farther above), the brownie brittle came out quite dark due to the cocoa powder and looks almost burnt, but wasn’t. 😅

The next time I gave it a go with regular Dutch-process cocoa powder (Bensdorp), below, and they came out a little lighter. (Note: I took the pictures on different days and the light here changes almost by the hour. So there are some differences due to that, too.)

In addition to the rich chocolate color, the chocolate flavor came through loud and clear. The chocolate chips scattered about gave it an extra boost of chocolate, and the lightly savory nuts were just as delicious on their own as they were on the brittle…and thankfully the recipe makes extra, so you can toss them into a winter salad. Baker’s Bonus: A few of the nuts may fall off the brittle when you break it up, with the caramel fused to the batter, which are especially tasty to snack on.

Bravo to Kat for introducing me to this brittle. Not only that, but friends who came by and grabbed a bite loved it too. I’m not a fan of the word “addictive,” but I’m going to use it here because in this case, I know what I’m talking about and won’t shut up about it.

Chocolate Brownie Brittle with Candied Walnuts

Adapted from 108 Asian Cookies: Not-Too-Sweet Treats from a Third-Culture Kitchen by Kat Lieu

This chocolate brownie brittle has lots of chocolate flavor, even though the batter has only 2 tablespoons (12g) of cocoa powder. The chocolate chips on top also dial up the chocolate flavor, but I’m a sucker for anything with candied nuts on it as well, and this brownie brittle ended up checking lots of boxes for me.

In her book, Kat calls for Japanese whisky in the brownie batter, and red miso with the candied nuts. I tinkered and tested it with various ingredients and substitutions, and if you don’t have red miso, you could use white miso or soy sauce, or leave it out and just stir in a good pinch of salt when mixing in the nuts with butter and sugar. For the Japanese whisky (or bourbon) in the brownie batter, I made it with a teaspoon of pure vanilla extract, and it came out very well, but a tablespoon of rum or brandy would work too.

I also gave the recipe a go with pecans in place of the walnuts, which work just as well. Whichever you use, you’ll end up with more candied nuts than you’ll need for the brittle; leftovers can be tossed in a winter salad or enjoyed as a snack.

Candied walnuts

2 cups (220g) whole shelled walnuts

1/4 cup (50g) sugar

2 tablespoons (30g) unsalted butter, cut into small cubes, at room temperature (very soft)

1 tablespoon red or white miso (optional, see headnote)

1/3 cup (40g) toasted white sesame seeds

Brownie brittle

1/2 cup (60g) all-purpose flour

2 tablespoons (12g) unsweetened Dutch-process cocoa powder

1/2 teaspoon baking soda

Pinch of salt

2 large egg whites (1/4 cup), at room temperature

1/2 cup (100g) sugar

4 tablespoons (60g) melted unsalted butter

1 tablespoon whisky or 1 teaspoon pure vanilla extract (see headnote)

1/2 cup (85g) bittersweet or semisweet chocolate chips

Flaky sea salt, such as Maldon or fleur de sel

To make the candied walnuts, preheat the oven to 350ºF (175ºC). Line a baking sheet with parchment paper or a silicone baking mat.

Put the walnuts in a medium saucepan, cover them with water, and bring the water to a boil (this reduces their bitterness). Drain the walnuts very well in a strainer, shaking off as much excess water as you can. Put the walnuts in a medium mixing bowl and add the sugar, cubed butter, miso (if using), and sesame seeds. Stir vigorously until the butter and sugar are melted and the nuts are well coated.

Spread the nuts and any liquid on the prepared baking sheet. Bake for a total of 18-20 minutes, stirring the nuts every 5 minutes, making sure that you mix in the nuts from the edges of the pan, which will start browning first, toward the center, so they all toast evenly. When done, the nuts should be lightly browned. There may be some syrup on the pan when the nuts are finished. If so, stir the syrup into the nuts as they cool so it coats the nuts, which’ll firm up as the nuts cool.

(The nuts can be made a few days in advance and kept in an airtight container at room temperature.)

To make the brownie brittle, reduce the heat of the oven to 325ºF (160ºC). Line a baking sheet with parchment paper or a silicone baking mat.

In a small bowl, whisk or sift together (if the cocoa powder is lumpy) the flour, cocoa powder, baking soda, and salt. In a separate medium bowl, whisk the egg whites until they just start to hold their shape when you lift the whisk, but are still a little sloshy; don’t beat them until stiff.

Whisk the sugar into the egg whites in four additions, then stir in the melted butter and whisky or vanilla. Fold in the dry ingredients with a flexible spatula. Spread the batter on the prepared baking sheet so it’s in a thin, even layer (a small, offset metal spatula works best for this). You want to end up with a rectangle that measures about 14 x 10 inches (35 x 25 cm). Top the batter with about 1 1/4 cups (115g) of the walnuts (or more, if you want) evenly spaced over the top, then the chocolate chips.

Bake the brittle until it’s baked through and crispy, 20 to 25 minutes. Remove from the oven and let cool on the baking sheet, then sprinkle with flaky sea salt and break into shards.

Storage: The brittle will keep for 3-4 days in an airtight container at room temperature.

Chocolate Brownie Brittle With Candied Walnuts

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