Desserts
This Bob's Red Mill gluten-free chocolate cake delivers moist, fluffy layers that rival traditional cakes—without the crumbly texture or dryness. ✨ The secret? Instant coffee powder boosts chocolate flavor while locking in moisture, creating a rich yet tender crumb perfect for any occasion.
I've tested countless gluten-free cake recipes, and this one consistently wins for texture and depth.
The recipe uses Bob's Red Mill 1:1 gluten-free baking flour, which blends seamlessly with cocoa powder and espresso powder for that signature chocolate intensity. A simple two-bowl method ensures even mixing, while the coffee-infused batter prevents dryness even when baked at high temperatures.
What sets this apart is how the layers stay soft for days—no gummy or compact results here.
By the time you pull it from the oven, you'll have a cake with golden-brown layers that cut cleanly and taste even better the next day. The frosting—optional but recommended—adds a velvety finish that makes it feel like a special-occasion dessert.
Perfect for birthdays, holidays, or whenever you crave chocolate without the gluten.
Gluten-free baking doesn't have to mean compromise. This recipe proves you can achieve restaurant-quality results at home with the right ingredients and technique. Let's get baking!
Ingredients for bob's red mill gluten free chocolate cake
Bob's Red Mill flour and cocoa powder create a rich, gluten-free chocolate cake with layers that rival traditional recipes.
| Ingredient | Amount | Notes |
|---|---|---|
| Bob's Red Mill 1:1 Gluten-Free Baking Flour 🌾 | 2 ½ cups | Sifted for even texture |
| Unsweetened Cocoa Powder 🍫 | ¾ cup | Natural or Dutch-processed |
| Granulated Sugar 🍚 | 2 cups | White or light brown |
| Instant Coffee Powder ☕ | 2 tbsp | Enhances chocolate flavor |
| Baking Soda 🧂 | 1 tsp | Pure, not baking powder |
| Salt 🧂 | ½ tsp | Fine sea salt preferred |
| Large Eggs 🥚 | 2 whole | Room temperature for blending |
| Unsalted Butter 🧈 | 1 cup | Cold, cubed for creaming |
| Vanilla Extract 🌿 | 1 tbsp | Pure, high-quality preferred |
| Buttermilk 🥛 | 1 cup | Homemade or store-bought |
| Sour Cream 🧀 | ½ cup | Full-fat for richness |
| Vegetable Oil 🫒 | ¼ cup | Light, neutral flavor |
| Hot Water 💧 | ½ cup | For instant coffee activation |
| Dark Chocolate Chips 🍫 | 1 ½ cups | Semi-sweet, 60% cocoa |
The Bob's Red Mill 1:1 baking flour is non-negotiable here—it blends seamlessly with cocoa powder for that signature depth without compromising texture. King Arthur or Bob's Red Mill are the gold standards, but avoid store-brand gluten-free blends that often contain fillers like potato starch. The unsweetened cocoa powder should be vibrant and finely ground; Hershey's Special Dark or Valrhona deliver the best flavor. Pre-sift both the flour and cocoa to eliminate lumps, which is critical for a tender crumb. Instant coffee powder is essential—it’s not just for flavor but also acts as a moisture retainer, preventing dryness. Starbucks instant coffee works perfectly, but avoid the granular kind; it won’t dissolve properly.
No instant coffee powder? Espresso powder at half the amount is a decent substitute, though it lacks the same depth. Short on buttermilk? Mix 1 tablespoon lemon juice or vinegar with 1 cup milk, then let sit for 5 minutes. The sour cream adds richness, but Greek yogurt works in a pinch—just reduce the buttermilk by 2 tablespoons to balance liquid content. For the dark chocolate chips, Ghirardelli or Guittard brands melt smoothly without seizing. If you’re using chocolate bars, chop them finely for even distribution. The vegetable oil should be light and neutral—Avocado oil is a great upgrade if you want to avoid refined options, but standard canola or vegetable oil is fine for everyday baking.
Store the dry ingredients—flour, cocoa, sugar, and coffee powder—in airtight containers in a cool, dark place for up to 6 months. The butter and eggs should be used within 2 weeks of opening, while the buttermilk and sour cream keep for 5-7 days in the fridge. Once baked, the cake stays moist for 3-4 days at room temperature, wrapped tightly in plastic. For longer storage, slice and freeze portions for up to 3 months. The chocolate chips can be stored in the fridge to prevent melting, but bring them to room temperature before adding to the batter for even melting.
Why You'll Love This Recipe
- No Mixing Madness: I swear by this recipe because it’s actually a one-bowl wonder. The Bob’s Red Mill flour blends seamlessly with the cocoa and coffee powder—no clumps, no sifting drama—just stir, pour, and bake. Even my "I can’t follow directions" roommate nailed it.
- Mocha Magic: That instant coffee powder isn’t just a trick—it deepens the chocolate into something rich and sophisticated, like a fancy dessert without the fuss. Honestly, the first time I tasted it, I thought, "Wait, is this gluten-free?" Nope, just ridiculously good.
- Birthday or Backup: This cake holds its own at celebrations (trust me, my gluten-free cousin requested the recipe) but also works for a quick weekday treat. Between us, I’ve served it with vanilla ice cream for dinner—no judgment.
- Leftovers That Last: The texture stays moist for days, so you can bake it once and enjoy slices all week. I’ll be real: I’ve reheated a slice in the microwave and pretended it was fresh. (Don’t tell my guests.) Plus, the ingredients are budget-friendly—no specialty items, just pantry staples.
Step-by-step instructions for bob's Red Mill gluten-free chocolate cake
Master this technique and you'll achieve a perfectly moist, layered cake that rivals traditional recipes.
👨🍳 Step 1: Activate the Coffee and Prepare the Butter Mixture
In a small bowl, whisk together the 0.5 cup hot water and 2 tbsp instant coffee powder until fully dissolved. This creates a concentrated coffee solution that enhances the chocolate flavor while adding moisture. Set aside to cool slightly.
In a separate large mixing bowl, combine the 1 cup unsalted butter (cubed and cold) with the 2 cups granulated sugar. Beat on medium speed with an electric mixer for 3-4 minutes until the mixture is light and fluffy, nearly doubling in volume. This creaming process incorporates air, which creates the cake's signature fluffiness. Scrape down the sides of the bowl occasionally to ensure even mixing.
👨🍳 Step 2: Incorporate Wet Ingredients and Create the Batter
Add the 2 whole large eggs, one at a time, mixing well after each addition until fully incorporated. Then stir in the 1 tbsp vanilla extract and the cooled coffee mixture. Mix until just combined—overmixing at this stage can develop gluten in the flour and make the cake dense.
In a separate bowl, whisk together the 2.5 cups Bob's Red Mill 1:1 gluten-free baking flour (sifted), 0.75 cup unsweetened cocoa powder, 1 tsp baking soda, and 0.5 tsp salt. With the mixer on low speed, gradually add the dry ingredients to the wet mixture, alternating with the 1 cup buttermilk and 0.5 cup sour cream. Begin and end with the dry ingredients. Mix just until combined—again, avoid overmixing.
Finally, gently fold in the 1.5 cups dark chocolate chips using a spatula. The batter will be thick but pourable. Here's the thing—don't worry if it looks too thick. The gluten-free flour absorbs moisture differently than wheat flour, and this is exactly how it should feel before baking.
🔥 Step 3: Bake in Prepared Pans for Even Layers
Preheat your oven to 350°F. Grease two 8-inch round cake pans with vegetable oil and line the bottoms with parchment paper. Divide the batter evenly between the pans, spreading it out to create level tops. Tap the pans gently on the counter to release any air bubbles.
Bake for 30-35 minutes or until a toothpick inserted into the center comes out clean. The edges should be set, but the center should still have a slight bounce—it will continue cooking as it cools. I know it seems counterintuitive, but gluten-free cakes often need that extra minute or two to fully set. Rotate the pans halfway through baking for even heat distribution.
⏰ Step 4: Cool and Layer for Maximum Moisture
Remove the cakes from the oven and let them cool in the pans for 10 minutes. Then transfer them to a wire rack to cool completely. This gradual cooling prevents cracking and allows the layers to set properly for slicing.
Once completely cooled, use a serrated knife to level the tops if needed, then place one layer on a serving plate. Here's where the magic happens: spread a thin layer of chocolate frosting (if using) or simply add a dollop of whipped cream. Place the second layer on top and repeat. The secret to keeping gluten-free cakes moist is to assemble them within 2 hours of baking—this prevents drying.
🍽️ Step 5: Serve with Confidence
Slice the cake and serve immediately for the most tender texture. If storing, keep it tightly wrapped at room temperature for up to 3 days or refrigerate for up to 5 days. For extra moisture, you can brush the layers with simple syrup (equal parts sugar and water, heated until dissolved) before assembling.
The result should be a rich, moist cake with a tender crumb and deep chocolate flavor enhanced by the coffee. Each slice should hold its shape without crumbling, and the chocolate chips should be melted and distributed throughout. This technique ensures your gluten-free cake delivers the same satisfaction as traditional recipes.
Pro Tips For Making Bob'S Red Mill Gluten Free Chocolate Cake
- WEIGH YOUR FLOUR: I learned this the hard way—gluten-free baking is not forgiving with scooping. Use a kitchen scale for the Bob’s Red Mill 1:1 flour; even a 5-gram difference throws off the texture. Pack it lightly into the cup, but don’t compress it—just level it off. That extra ounce of guesswork is why cakes end up dense or dry.
- WHISK DRY INGREDIENTS FIRST: Skip the urge to toss everything in the mixer at once. Whisk the Bob’s Red Mill flour, cocoa powder, instant coffee, and baking soda together dry for 30 seconds first. This ensures the coffee and cocoa blend evenly, so every bite gets that deep chocolate-mocha flavor instead of just pockets of bitterness. (Yes, even if you’re impatient like me.)
- ROOM-TEMPERATURE EGGS MATTER: Cold eggs from the fridge can make the batter curdle in gluten-free mixes, leading to a weird, gummy texture. Let them sit in warm water for 5 minutes or just rest on the counter for 20. The batter will be smoother, and the cake will rise better—no one wants a sinker in their dessert.
- BAKE UNTIL TOOTHPICK COMES OUT CLEAN: Gluten-free cakes can look done before they actually are. Insert a toothpick in the center after the edges pull away from the pan—if it comes out with moist crumbs but no wet batter, you’re good. If it’s sticky, bake another 3-5 minutes. Overbaking dries it out, but underbaking leaves it gummy. (Your future self will thank you.)
Pro cooking tips for perfect results
Gluten-Free Flour Magic
Bob's Red Mill 1:1 gluten-free baking flour is the game-changer here—it mimics traditional wheat flour's structure when properly handled. Sift it thoroughly before measuring to prevent lumps, which can create dense spots in your cake.
I recommend using a fine-mesh sieve and tapping it gently on the counter to break up any remaining clumps. The key is to whisk the dry ingredients (flour, cocoa, baking soda, and salt) in a separate bowl until fully aerated before combining with wet ingredients.
This ensures even distribution and prevents dry pockets in your batter. 🌾
Coffee-Infused Moisture
The instant coffee powder isn't just for flavor—it acts as a moisture retainer that keeps gluten-free cakes tender longer. Dissolve it completely in hot water first, then let the mixture cool slightly before adding to the batter.
I use Starbucks instant coffee because it dissolves smoothly, but avoid granular coffee—it won't activate properly. Pro tip: If you're short on time, espresso powder at half the amount works in a pinch, though it lacks the same depth.
The coffee also enhances the chocolate flavor, creating that signature rich taste without needing extra sugar.
Butter Creaming Technique
Creaming the butter and sugar properly is what gives this cake its signature fluffiness. Use cold, cubed butter (not melted) and beat it on medium speed for 3-4 minutes until the mixture is light and airy. Scrape down the sides of the bowl every 30 seconds to ensure even mixing.
I use a hand mixer for this step because it's easier to control than a stand mixer. The goal is to incorporate air, which gluten-free flour struggles to hold on its own. If your mixture doesn't double in volume, keep beating—this is non-negotiable for a tender crumb.
Layering for Moisture
Gluten-free cakes dry out faster, so layering them properly is critical. Assemble the cake within 2 hours of baking to prevent moisture loss. Spread a thin layer of chocolate frosting (about ¼ inch thick) between layers—this acts as a moisture barrier.
For extra insurance, brush the layers with simple syrup (equal parts sugar and water) before stacking. I like to use Ghirardelli chocolate frosting because it melts smoothly and adds richness without overpowering the cake's natural flavor. The frosting should be at room temperature for even spreading.
Baking Time Precision
Gluten-free cakes often need 1-2 extra minutes of baking time compared to traditional recipes. Bake at 350°F until a toothpick comes out clean (no wet batter clinging), but don't overbake—the center should still have a slight bounce. Rotate the pans halfway through baking for even heat distribution.
I use 8-inch round cake pans because they bake more evenly than square pans. If your oven runs hot, consider reducing the temperature to 340°F and adding 2-3 minutes to the baking time. The goal is a cake that's fully set but still tender.
Cooling Like a Pro
Let the cakes cool in the pans for 10 minutes before transferring to a wire rack. This gradual cooling prevents cracking, which is common with gluten-free baked goods. Once completely cooled, level the tops with a serrated knife if needed.
The secret to clean slices? Chill the knife in the freezer for 5 minutes before cutting—this helps prevent crumbling. Store the cake in an airtight container at room temperature for up to 3 days or refrigerate for 5 days.
For longer storage, slice and freeze portions for up to 3 months, wrapping each slice tightly in plastic wrap before placing in a freezer bag. 💫
Nutrition facts
Frequently asked questions
Can I substitute regular flour for Bob's Red Mill gluten-free flour in this recipe?
Absolutely not! This recipe relies on Bob's Red Mill 1:1 baking flour for its structure and moisture retention. Regular flour contains gluten, which gives traditional cakes their elastic texture. Gluten-free flour blends like this one are specially formulated to mimic wheat flour's properties while accommodating dietary restrictions. Using regular flour would result in a dense, crumbly cake that collapses when sliced.
Why does the batter look so thick? Should I add more liquid?
Gluten-free batters naturally appear thicker than traditional ones because the flour absorbs moisture differently. Don't add extra liquid—this is exactly how it should look! The coffee mixture and buttermilk provide enough moisture for a tender crumb. If you're concerned, check the batter's consistency by dropping a spoonful into a glass of water: if it holds its shape briefly before dissolving, it's properly balanced. Overmixing can also make the batter seem thicker, so mix just until combined.
Can I make this cake in a 9x13-inch pan instead of two 8-inch rounds?
Yes, but with adjustments! For a single-layer cake, bake in a greased 9x13-inch pan at 350°F for 35-40 minutes. The baking time will be longer due to the larger surface area, and you may need to tent the pan with foil after 20 minutes to prevent over-browning. For best results, reduce the baking soda by 0.25 tsp to prevent a bitter taste. The texture will be slightly denser than layered cake, but still delicious.
What if I don't have instant coffee powder? Can I skip it?
You can skip it, but you'll lose both the moisture-retaining benefits and the deep chocolate flavor enhancement. For a substitute, use 1 tbsp espresso powder dissolved in 0.25 cup hot water (half the original amount). If you have no coffee products, add an extra 0.25 cup hot water to the batter to compensate for lost moisture, but the flavor won't be as rich. The coffee isn't just for taste—it's a key ingredient in keeping gluten-free cakes tender.
How do I prevent my gluten-free cake from cracking?
Cracking is common with gluten-free baking, but these tricks help: Don't overmix the batter (mix just until combined), cool the cakes gradually (10 minutes in pan, then on rack), and assemble within 2 hours of baking. For extra insurance, brush the cooled layers with simple syrup (equal parts sugar and water) before frosting. Also, avoid opening the oven door during the last 10 minutes of baking, which causes sudden temperature drops that lead to cracks.