Fudgy Gluten Free Brownies (Easy One-Bowl)

These fudgy gluten free brownies have the crackly top and dense, chewy center you miss from a boxed mix, made with everyday ingredients and no specialty flours.

Everything comes together in one bowl in about 15 minutes, so they’re my go-to for a last-minute dessert craving or a bake sale contribution that nobody guesses is gluten free.

What Makes These Brownies So Good

The batter is thick and glossy, and it bakes into a brownie with a paper-thin shiny top that shatters as you slice. Each bite is dense and rich without being heavy.

Melted butter carries the chocolate flavor deep into every square, and a handful of chocolate chips keeps the center fudgy for days. There is no gritty texture or weird aftertaste, just dark, straightforward chocolate.

Ingredients

• 1/2 cup (113 g) unsalted butter, melted and cooled slightly: brings richness and helps dissolve the sugar for that crackly top
• 1 cup (200 g) granulated sugar: creates the shiny crust and sweetness
• 1/4 cup (50 g) packed brown sugar: adds a hint of soft caramel
• 2 large eggs, at room temperature: cold eggs can seize the butter; let them sit on the counter while you melt it
• 2 tsp vanilla extract: rounds out the chocolate
• 3/4 cup (90 g) 1:1 gluten free flour blend with xanthan gum: look for a cup‑for‑cup blend in the baking aisle
• 1/2 cup (43 g) unsweetened cocoa powder, sifted: use natural or Dutch process, whichever you keep on hand
• 1/2 tsp fine sea salt: salt wakes up the chocolate
• 1 cup (170 g) semisweet chocolate chips, divided: most go into the batter, a few are saved for the top

Variations / Substitutions

• Dairy free: swap the butter with the same amount of melted coconut oil or a plant‑based butter stick, and use dairy‑free chocolate chips. The texture stays close to the original.
• Deeper chocolate: replace 1 tbsp of the cocoa with instant espresso powder. It won’t taste like coffee, just more chocolate.
• Nutty swirl: spoon 2 tbsp of room‑temperature almond butter over the batter before baking and drag a knife through for marbled squares.
• Brown butter: cook the butter a few minutes past melting until it smells nutty, then cool slightly and proceed. It adds a savory depth that works beautifully with chocolate.

If you like these, try my Almond Flour Chocolate Chip Cookies the next time a craving hits.

How to Make Fudgy Gluten Free Brownies

Step 1: Mix the Wet Ingredients

Set an oven rack in the middle and preheat the oven to 350°F (175°C). Line an 8×8‑inch baking pan with parchment paper so the ends overhang on two sides; that makes lifting the brownies out clean.

In a large bowl, whisk together the 1/2 cup melted butter, 1 cup granulated sugar, 1/4 cup brown sugar, 2 eggs, and 2 teaspoons vanilla. Beat until the mixture is smooth and a shade lighter, about 1 minute. The sugar should start to dissolve into the butter rather than feel gritty between your fingers.

The liquid will look glossy and thick, almost like a dark caramel syrup. That gloss is what later turns into the crackly top, so don’t rush past this step.

Step 2: Add the Dry Ingredients

Sift the 3/4 cup gluten free flour blend, 1/2 cup cocoa powder, and 1/2 teaspoon salt directly into the bowl. Switch to a rubber spatula and fold everything together. Stop as soon as the flour disappears; overmixing works the gluten‑free starch too hard and can turn the brownies cakey.

The batter will be very thick, pulling away from the sides of the bowl in one deep brown mass. If you’re used to runny box‑mix batter, this is correct. The density here is what gives you that fudgy bite.

Step 3: Fold in the Chocolate Chips

Reserve about 2 tablespoons of the 1 cup chocolate chips for the top, and fold the rest into the batter. Distribute them in a few quick swipes so they don’t sink to the bottom later.

The dark batter speckled with solid chips looks unassuming right now, but those chips will melt into little molten pockets that keep the brownies soft long after they cool. Try to stop sneaking spoonfuls of the raw batter.

Step 4: Bake the Brownies

Scrape the batter into the prepared pan and level it out with the spatula. Scatter the reserved chocolate chips over the top and press them down lightly so they stick. Bake for 25 to 30 minutes, until a toothpick inserted in the center comes out with a few moist crumbs, not wet batter.

The top will puff slightly and develop a shiny, paper‑thin crackle during the last few minutes. If the surface still looks wet and glossy all over, give it 2 more minutes and check again. The brownies will continue to set as they cool.

Step 5: Cool, Slice, and Serve

Let the brownies cool completely in the pan on a wire rack, at least 30 minutes. Lift them out with the parchment overhang and use a sharp knife to trim the edges if you want clean squares. Slice into 16 pieces.

The first cut reveals a dense, fudgy interior with streaks of melted chocolate. Serve the squares still slightly warm or at room temperature, whichever you prefer.

A Few Notes Before You Start

• Weigh the flour if you can.: A dry measuring cup can pack too much flour into the batter and make the brownies dry. If you don’t have a scale, stir the flour in the bag, spoon it into the cup, and level it without tapping.
• Room‑temperature eggs matter.: If you forget to pull them out early, set the eggs in a bowl of warm water for 5 minutes. Cold eggs can firm up the melted butter and make the batter seize.
• Wait before slicing.: Cutting into hot brownies leaves messy, crumbling squares. That half‑hour rest is when the crumb sets.
• Use the parchment sling.: It seems small, but lifting a solid block of brownie out of the pan makes slicing so much cleaner than fighting with a spatula in a hot dish.

Bake times by pan size:

Storing and Keeping Brownies Soft

• Refrigerate: Keep cut brownies in an airtight container, with parchment between layers, for up to 5 days. The fridge firms them up, which some people love.
• Reheating: A quick 10‑second burst in the microwave brings back the fudgy texture. Don’t overheat or the chocolate chips can go pasty.
• Freeze: Wrap squares individually and freeze for up to 2 months. Thaw at room temperature and they taste nearly fresh‑baked.

What to Serve with These Brownies

A scoop of vanilla ice cream sits next to a warm brownie like cold cream meeting dense chocolate, and the contrast in temperature and texture feels just right. Fresh raspberries add a bright tartness that cuts through the richness, while a dollop of whipped cream keeps things simpler. For a casual dessert, crumble a brownie over a bowl of vanilla yogurt and stir in a few chocolate chips.

Frequently Asked Questions

Can I double the recipe?

Yes, double all ingredients and use a 9×13‑inch pan. The bake time will be closer to 28 to 32 minutes, so check with a toothpick in the center.

Why did my brownies turn out cakey?

Cakey brownies usually mean the batter was overmixed once the flour went in, or the eggs were beaten too long with the sugar. Fold dry ingredients until just combined, and stop as soon as the flour disappears.

Can I use a different sweetener?

You can swap the granulated sugar for coconut sugar, but the top won’t crackle and the texture will be slightly more crumbly. I don’t recommend liquid sweeteners because they throw off the moisture balance.

Is it okay to use a gluten free flour blend without xanthan gum?

If your blend has no binder, add 1/4 teaspoon xanthan gum when you add the flour. Without it, the brownies may crumble apart.

Fudgy Gluten Free Brownies Recipe

Print Recipe Pin Recipe

Prep Time 15 minutes mins

Cook Time 30 minutes mins

Total Time 45 minutes mins

Servings: 16 servings

Calories: 180

Ingredients Method Notes

Ingredients

  

• 1/2 cup (113 g) unsalted butter, melted and cooled slightly
• 1 cup (200 g) granulated sugar
• 1/4 cup (50 g) packed brown sugar
• 2 large eggs, at room temperature
• 2 tsp vanilla extract
• 3/4 cup (90 g) 1:1 gluten free flour blend (with xanthan gum)
• 1/2 cup (43 g) unsweetened cocoa powder, sifted
• 1/2 tsp fine sea salt
• 1 cup (170 g) semisweet chocolate chips, divided

Method

 

1. Preheat oven to 350°F (175°C) and line an 8×8‑inch pan with parchment.
2. Whisk melted butter, both sugars, eggs, and vanilla in a large bowl until smooth and slightly lightened.
3. Sift in the flour, cocoa powder, and salt. Fold with a spatula until just combined.
4. Reserve 2 tbsp of chocolate chips, then fold the rest into the batter. Spread into the pan and press reserved chips on top.
5. Bake 25–30 minutes, until a toothpick has moist crumbs. Cool completely in the pan, lift out, and slice into 16 squares.

Notes

Let the brownies cool at least 30 minutes before slicing; they finish setting outside the oven. For the cleanest squares, run your knife under hot water and wipe it between cuts.