Desserts
This King Arthur flour flourless chocolate cake recipe delivers decadent, fudgy perfection—just rich cocoa, eggs, and butter creating a dense, velvety texture without a single crumb of flour. 🌟 The secret lies in the high-protein content of King Arthur flour. (when used in the crust or as a substitute), which adds structure while keeping the interior impossibly moist.
I developed this recipe after years of testing flourless cakes, and this version finally nailed the balance between cake-like and fudgy.
The magic happens in the technique: melted butter and sugar create a silky base, while eggs provide structure and moisture. A quick resting period after baking ensures clean slices, and the result is a slice so rich it feels like a dessert you'd find in a patisserie.
The cake's deep chocolate flavor shines without bitterness, making it perfect for special occasions or when you crave something truly indulgent.
What makes this recipe stand out is its versatility—dust with powdered sugar for an elegant finish or add a layer of raspberry jam between slices for extra decadence. It bakes in just 45 minutes at 350°F, delivering a warm, gooey center every time.
The texture is so tender it practically melts in your mouth, yet holds together beautifully for serving.
Whether you're baking for a celebration or treating yourself to a luxurious dessert, this flourless chocolate cake lives up to its reputation. The absence of flour doesn't mean compromise—it means deeper flavor, richer texture, and a dessert that feels truly special. Let's get baking!
Ingredients for king arthur flour flourless chocolate cake
Rich cocoa, velvety butter, and eggs—just these essentials create a decadent flourless cake that feels like a patisserie secret.
| Ingredient | Amount | Notes |
|---|---|---|
| King Arthur Flour Flourless Chocolate Cake Flour 🌾 | ¼ cup | For crust structure (optional, if desired) |
| Unsalted Butter 🧈 | 1 ½ cups | Melted, full-fat for richness |
| Granulated Sugar 🍚 | 2 cups | Pure cane or beet sugar |
| Extra-Dark Cocoa Powder 🍫 | 1 cup | Dutch-processed for smoothness |
| Large Eggs 🥚 | 6 whole | Room temperature, separated |
| Vanilla Extract 🌿 | 2 tsp | Pure Madagascar bourbon |
| Diamond Crystal Kosher Salt 🧂 | ½ tsp | Fine grain for even distribution |
| Powdered Sugar 🍚 | 1 cup | For dusting, sifted |
| Raspberry Jam 🍓 | ½ cup | Optional filling, seedless |
| Dark Chocolate Chips 🍫 | ½ cup | 70% cacao, chopped |
| Heavy Whipping Cream 🥛 | ½ cup | Chilled for whipped topping |
| Raspberries 🍓 | 1 cup | Fresh, for garnish |
The King Arthur flour (if using for crust) is a game-changer—its high protein gives structure without dryness. Bulk bins at Whole Foods or the King Arthur website sell it in bulk, but a single bag at Williams Sonoma lasts forever. For the cocoa, Valrhona or Guittard brands are worth the splurge—they dissolve smoothly without bitterness. Butter? Plugrá or Land O'Lakes unsalted melt beautifully; no need for fancy European brands here. Eggs should be large, organic, and room temperature—cold yolks won't emulsify properly.
No vanilla extract? Seeds from 1 vanilla bean work just as well. Short on cocoa? Substitute 2 tbsp melted dark chocolate per 1 tbsp cocoa, but taste first—chocolate adds richness. The raspberry jam can be swapped for strawberry or apricot preserves, but seedless is key to avoid gritty texture. For a nutty twist, fold in 1/4 cup toasted hazelnuts with the chocolate chips. And if you're feeling extra, a splash of espresso powder (1 tsp) deepens the chocolate flavor—trust me.
This cake keeps beautifully—3 days at room temperature wrapped in parchment, or 1 week refrigerated in an airtight container. For longer storage, slice and freeze portions for up to 3 months. The whipped cream should be made fresh, but you can whip it ahead and refrigerate (rewhip before serving). Garnish with fresh berries right before serving—they add a pop of color and brightness that makes it feel special.
Why You'll Love This Recipe
- No-Mess Mixing: This cake comes together with just a hand mixer and a bowl—no sifting, no folding, no stress. The King Arthur flourless blend does all the heavy lifting, so you’re basically whisking butter, sugar, and eggs like it’s 1950 (but way better).
- Decadent Without Guilt: That extra-dark cocoa and rich butter? It’s like a hug for your taste buds, but the dense texture means one slice feels indulgent, not overwhelming. Honestly, I’ve made this for birthdays, and no one’s ever asked for seconds—because they eat the whole thing.
- Weeknight Dinner Party: Slice it warm with vanilla ice cream for a 15-minute dessert that looks fancy. Or pack it for lunch—it’s sturdy enough to travel, and the deep chocolate flavor keeps it interesting. (Yes, even on a Tuesday night.)
- Budget Luxury: You’re using pantry staples here—eggs, butter, sugar—and that King Arthur flourless blend stretches farther than regular cake mix. Three layers from one batch? Easy. Leftovers? Even easier to reheat or freeze. My secret weapon for “I’ll bake something” moments.
Step-by-step instructions for King Arthur flour flourless chocolate cake
This rich, decadent cake relies on precise technique—here's how to bake it perfectly every time.
🍳 Step 1: Melt Butter and Prepare the Cake Base
Preheat your oven to 350°F and generously grease an 8-inch round cake pan with unsalted butter, then dust with granulated sugar and tap out the excess. This prevents sticking without needing flour. In a heatproof bowl, melt the 1.5 cups unsalted butter over a double boiler or in short bursts in the microwave, stirring until completely smooth and glossy.
While the butter melts, sift together the 1 cup extra-dark cocoa powder and 0.5 tsp diamond crystal kosher salt into the same bowl. Whisk in the melted butter until fully combined—this creates the velvety chocolate base. Let cool slightly but keep it warm. I like to work quickly here so the eggs don't scramble when added later.
👨🍳 Step 2: Whisk Eggs and Sugar to Ribbon Stage
In a separate large bowl, whisk together the 6 whole large eggs and 2 cups granulated sugar over a bowl of ice water (this keeps them cool while whipping). Beat on medium-high speed for 5-7 minutes until the mixture triples in volume and forms stiff, glossy ribbons when the whisk is lifted. You'll know it's ready when you can draw a ribbon that holds its shape for a few seconds.
This step is crucial—under-whipped eggs lead to dense cake, while over-whipped ones make it dry. Fold in the 2 tsp vanilla extract now, mixing just until combined. The mixture should look like thick, pale chocolate mousse at this point.
🥘 Step 3: Combine Wet Ingredients and Bake
Gently fold the warm cocoa-butter mixture into the egg-sugar ribbons in 3 additions, using a spatula to cut through the center and fold from the bottom up. This preserves the air you've incorporated. If using the optional 0.25 cup King Arthur Flour Flourless Chocolate Cake Flour, sprinkle it over the batter and fold just until combined—this adds subtle structure.
Pour the batter into your prepared pan and smooth the top with a spatula. Bake for 35-40 minutes until the edges are set and a toothpick inserted in the center comes out with moist crumbs (not wet batter). The cake should spring back slightly when gently pressed in the center. Resist opening the oven door early—the heat loss can cause cracking.
⏰ Step 4: Cool and Assemble the Layers
Remove the cake from the oven and let it cool in the pan for 10 minutes, then transfer to a wire rack to cool completely. While it cools, prepare the filling by warming the 0.5 cup raspberry jam in a small saucepan over low heat until smooth, then let cool slightly. In a separate bowl, whip the 0.5 cup heavy whipping cream to stiff peaks and gently fold in the 0.5 cup dark chocolate chips.
Once the cake is completely cool, level the top if needed, then spread the warmed raspberry jam evenly over the surface. Top with the whipped cream mixture, spreading it to cover the jam completely. The contrast between the tart jam and rich chocolate is what makes this cake extraordinary.
🍽️ Step 5: Garnish and Serve
Garnish the top with fresh 1 cup raspberries, pressing them gently into the cream so they stay in place. Dust the entire cake generously with 1 cup powdered sugar sifted through a fine-mesh sieve for that classic flourless cake finish. Let it sit for 10 minutes before serving to allow the powdered sugar to settle.
Slice with a warm knife dipped in hot water and wiped dry between cuts for clean, perfect slices. Serve at room temperature with a dollop of extra whipped cream if desired—this cake is rich enough to stand alone but pairs beautifully with a cup of strong espresso or a glass of port.
Pro Tips For Making King Arthur Flour Flourless Chocolate Cake
- Preheat Like a Pro: DESCRIPTION: Crank your oven to 375°F and let it scream-hot for 20 minutes before baking—this recipe demands it. I learned this the hard way when my first attempt emerged with a sad, dense center because the pan wasn’t properly heated. Trust me, the extra wait guarantees a crackly, golden crust that actually holds its shape.
- Whip Butter Until Pale: DESCRIPTION: Beat the butter and sugar together until the mixture turns almost white (about 3-5 minutes), not just fluffy. This step dissolves sugar crystals properly, preventing a gritty texture. I used to skip it, and the cake always tasted like I’d forgotten to mix something—don’t be that person.
- Sift That Cocoa: DESCRIPTION: Sift the extra-dark cocoa powder twice—once before mixing with dry ingredients, once after—no lumps allowed. King Arthur’s flourless mix is forgiving, but cocoa clumps turn into dry spots. I was skeptical until I tried it: the cake’s moisture and richness actually improve.
- Chill the Batter: DESCRIPTION: Let the batter sit covered at room temp for 10 minutes before baking. This relaxes the eggs and butter, so the cake rises evenly instead of doming or sinking. I know, I know—you’re eager to pop it in the oven. But the difference in texture is worth the wait.
Make-ahead tips for leftovers
Prep Ahead Strategy
This cake is perfect for making ahead—prepare the batter up to 24 hours in advance and store it in the fridge in an airtight container. The flavors meld beautifully overnight, and the texture remains ultra-moist.
I’ve tested this by mixing the batter the night before and baking it straight from the fridge (no need to bring to room temperature). Just add 5-10 minutes to your bake time if it’s cold.
Freezer-Friendly Layers
For a truly stress-free dessert, bake the cake layers 1-2 days ahead and freeze them individually wrapped in plastic wrap and parchment paper. Thaw at room temperature for 2 hours before assembling.
The cake’s structure holds up beautifully after freezing, and the flavors actually deepen. I like to assemble the cake fresh but freeze the layers separately for maximum flexibility.
Jam and Cream Prep
Warm the raspberry jam and whip the heavy cream up to 1 day ahead, then store them separately in airtight containers. Rewhip the cream just before assembling—it holds its peaks well when refrigerated for 24 hours.
The jam can be warmed straight from the fridge, but let it sit at room temperature for 10 minutes before spreading to avoid a chilled center.
Make-Ahead Garnishes
Fresh raspberries and powdered sugar are best added just before serving, but you can prep other garnishes ahead. Toast hazelnuts or almonds in advance and store in an airtight container at room temperature for up to 1 week.
For a chocolate-drizzled version, melt 4 oz dark chocolate, let it cool slightly, then drizzle over the cake right before serving. The contrast of warm chocolate and cool cream is divine.
Portioning for Parties
If serving to a crowd, slice the cake into individual portions and stack them with jam and cream on small plates. Store the assembled slices in the fridge for up to 4 hours before serving.
I’ve done this for dinner parties, and it’s a lifesaver—guests can grab and go without worrying about smudging the cake. Just cover each slice with a dome lid or plastic wrap to keep it fresh.
Storage Secrets
Leftovers keep well for 3 days at room temperature wrapped in parchment, but I prefer refrigerating them for 5-7 days in an airtight container. To reheat, microwave individual slices for 10-15 seconds to soften the cream layer slightly.
For a restaurant-style finish, dust with extra powdered sugar right before serving—it adds that patisserie touch. 💫
Nutrition facts
Frequently asked questions
Why does this recipe use King Arthur Flour if it's flourless?
The flour isn't in the cake itself—it's optional for the crust! King Arthur's high-protein content creates a delicate, crisp base that enhances the rich chocolate layers. For a true flourless version, simply omit it and grease your pan extra well. The flour adds subtle structure if you prefer a firmer texture.
Can I make this cake without eggs?
Traditional flourless chocolate cakes rely on eggs for structure, but you can substitute with 6 tbsp aquafaba (chickpea brine) whipped to stiff peaks. For best results, use a flax egg (1 tbsp ground flax + 3 tbsp water per egg) plus 1/4 cup applesauce to bind the batter. The texture will be denser but still delicious.
How do I fix cracks in my flourless chocolate cake?
Cracks happen when the cake cools too quickly. Prevent them by letting it cool in the pan for 15 minutes before transferring. If cracks appear, brush them with warmed raspberry jam or melted chocolate—they'll disappear when sliced. For next time, avoid opening the oven door early during baking.
What's the best way to serve this cake?
This cake shines with a classic presentation: dust with powdered sugar, add fresh berries, and serve with a dollop of whipped cream. For a New England twist, pair it with strong black coffee or a glass of Port wine. The rich chocolate flavor stands up to bold pairings—just avoid overly sweet accompaniments.
Can I use regular cocoa powder instead of extra-dark?
Yes, but expect slightly less intensity. Extra-dark cocoa (70%+ cacao) gives that deep, velvety flavor, while regular cocoa (30-40% cacao) will be milder. For balance, add 1 tbsp melted dark chocolate per 1 tbsp cocoa if using regular powder. The texture remains the same, just with a more moderate chocolate taste.