When I set out to make the best gluten-free brownie recipe, I knew exactly what I was looking for: a fudgy center, chewy edges, and that shiny crackly top. After a lot of testing, that's exactly where this recipe landed. They're also easy to make from scratch with simple ingredients and a little bit of stirring.

Gluten-Free Brownies sliced into squares, resting on parchment paper and a wire rack next to a knife.

The Real Secret to Crackly Tops

In my opinion, a brownie isn't a perfect brownie unless it has crackled tops. The way to achieve crackled tops isn't luck, it's science. And that right there is why I love baking... it's a mini chemistry experiment!

Anyway, if you want to know why brownies crinkle and why they don't, here's the quick explanation because sometimes I love sharing science-y nerd stuff:

The secret is all about sugar syrup concentration. Basically, the amount of dissolved sugar in your batter needs to be at least twice the amount of water in the recipe. When you nail that ratio, you get that gorgeous shiny, crackled top every single time. (If you're curious, this recipe is about 300%. 😉)

While melting your sugar with butter or whisking it thoroughly into your eggs can help, it won't really matter if you don't have the ratio right. This is actually why boxed brownie mixes can achieve a crackled top without any complicated instructions.

What You'll Need

Ingredients for gluten free brownies measured out in bowls.

Gluten-Free Flour Blend: I like using Bob's Red Mill 1:1 gluten-free flour or my copycat Bob's blend for this recipe, but other high-quality blends like King Arthur Measure for Measure or Cup4Cup also work well. Stick with a reliable blend for the best texture.
Dutch-Process Cocoa Powder: This is key for that rich chocolate flavor. Dutch-process cocoa is darker and less acidic than natural cocoa powder, which gives these brownies a deeper, smoother taste.
Dark Chocolate: Use a good-quality dark chocolate bar for the best results. I used Choceur Dark Chocolate Bar (49% cacao) from Aldi.
Espresso Powder: This doesn't make the brownies taste like coffee, but it does deepen the chocolate flavor. I highly recommend it if you have it.
Eggs & Egg Yolk: The extra yolk helps create that rich, fudgy texture and chewy bite.
Granulated Sugar: This recipe uses all granulated sugar, which helps create that shiny crackly top and keeps the brownies soft and moist.

How to Make the Best Gluten-Free Brownies

image collage showing steps of mixing batter in glass bowl with whisk.

In a small saucepan, melt the butter. Then whisk in a portion of the sugar and the chopped dark chocolate. After that is melted and smooth, whisk in the cocoa powder and set it aside to cool.
Now, whisk together the eggs, egg yolk, remaining sugar, and vanilla extract. Give it a good whisk here until the eggs are fully smooth.
Slowly pour the warm chocolate mixture into the egg mixture, whisking while you pour.
In a small bowl, whisk together the flour, espresso powder, and salt. Then stir it into the chocolate mixture.
Pour the brownie batter into a prepared baking pan and bake according to the recipe instructions below.

Thick brownie batter mixed in glass bowl next to Brownie batter pouring into parchment lined baking pan. — Gratuitous brownie batter shots. 🤤🤤🤤

What Pan Should I Use?

I use an 8x8 metal square pan. A light colored aluminum pan heats quickly and evenly, which helps the center set before the edges dry out. I also love using straight-sided metal pans. It gives your baked goods a professional look.

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These Brownies Stay Fresh for Days

Yep. It's true. I had some leftover in a bag from testing and they were still soft a week later!

Just keep the brownies covered with plastic wrap or in an airtight container at room temperature. All that soft, chewy texture will be there waiting for you.

Granted, I would ideally recommend you eat them within a few days. If you're serving them to guests, you can bake them up to a day ahead of time.

Brownies stacked on wire rack, showing fudgy interior and crinkled tops.

Want More Tips?

These brownies are truly fudgy, even when fully baked through! I do NOT recommend under-baking them.
For the best flavor, use high quality ingredients. Get the good chocolate and cocoa powder.
I didn't use chocolate chips for the dark chocolate in the recipe, I used a high quality chocolate bar for baking.
These are not cakey at all. If you'd like me to develop a cakey brownie version next, let me know in the comments!