Desserts
America's Test Kitchen's old-fashioned chocolate cake recipe delivers the perfect balance of rich, fudgy layers and a moist crumb—no dry cake here. The secret lies in a precise buttermilk technique that creates that signature tender texture while keeping the cake dense enough to hold up to generous frosting.
After years of testing, this version consistently produces a cake that's both deeply flavorful and structurally sound, with none of the common pitfalls like cracking or sinking.
What sets this recipe apart is the methodical approach to mixing and baking that ensures even layers and proper rise. The cake batter incorporates melted butter and buttermilk for moisture, while a touch of espresso powder enhances the chocolate flavor without overpowering it.
Baking times are carefully calibrated to achieve a golden crust with a fudgy center that stays moist for days. This isn't just another chocolate cake—it's a reliable, professional-quality dessert that lives up to its name.
The result is a layered cake with a velvety crumb and subtle crunch from the buttermilk's reaction with baking soda. Each slice reveals that signature dense yet tender texture, perfect for cutting into generous portions.
The cake holds its shape beautifully, making it ideal for layering with ganache or whipped cream. Whether you're serving it at a dinner party or simply treating yourself, this recipe delivers a chocolate cake experience that's consistently impressive.
For best results, follow the precise baking times and cooling instructions to maintain structural integrity. The cake pairs exceptionally well with chocolate ganache, whipped cream, or a dusting of cocoa powder.
This recipe isn't just about making a chocolate cake—it's about mastering the art of old-fashioned baking with professional precision. Let's get started on creating your perfect slice.
Ingredients for america's test kitchen old fashioned chocolate cake
Here's the precise ingredient lineup for that legendary America's Test Kitchen chocolate cake—rich, fudgy, and perfectly balanced.
| Ingredient | Amount | Notes |
|---|---|---|
| Unsalted Butter 🧈 | 1 cup | Melted and cooled to room temperature |
| Granulated Sugar 🍚 | 2 cups | Packed lightly for accurate measurement |
| Dark Brown Sugar 🍚 | ½ cup | Packed lightly for moisture |
| All-Purpose Flour 🌾 | 2 ½ cups | Sifted for even texture |
| Unsweetened Cocoa Powder 🍫 | ¾ cup | Natural or Dutch-processed |
| Baking Soda 🧂 | ½ tsp | Freshly opened for potency |
| Espresso Powder ☕ | 1 tbsp | Enhances chocolate depth |
| Salt 🧂 | ½ tsp | Diamond Crystal kosher preferred |
| Buttermilk 🥛 | 1 cup | Fresh or homemade blend |
| Vanilla Extract 🌿 | 2 tsp | Pure Madagascar bourbon |
| Large Eggs 🥚 | 2 whole | Room temperature for even mixing |
| Hot Water 💧 | ½ cup | Near boiling for buttermilk blend |
| Vegetable Oil 🫒 | ½ cup | Light or neutral flavor preferred |
The butter here isn't just any butter—European-style unsalted with at least 82% fat content makes all the difference. Plugrá or President brands are my go-tos, but any high-quality European butter works. The espresso powder? Starbucks Via Instant or Lavazza are reliable choices—it deepens the chocolate flavor without bitterness. For the cocoa powder, Dutch-processed like Hershey's Special Dark gives a smoother texture, while natural cocoa like Ghirardelli adds more intensity. The buttermilk is non-negotiable—homemade (milk + vinegar) beats store-bought every time for that signature tender crumb.
No buttermilk? Mix 1 cup milk + 1 tbsp vinegar or lemon juice, let sit 5 minutes. Short on espresso powder? 1 tsp instant coffee works in a pinch, though it lacks the same depth. The vegetable oil keeps the cake moist without adding butter flavor—Avocado oil is my top pick for neutral taste. For the sugars, lightly packed is key—don't scoop and level. The baking soda needs to be fresh; if your stash is over 6 months old, toast it in a dry pan for 10 minutes to revive it. The eggs should be room temperature—cold eggs create air pockets that deflate during baking.
This cake is best made fresh, but the batter keeps 24 hours covered in the fridge if you're prepping ahead. Baked layers? Cool completely, then wrap tightly with plastic wrap—stays moist for 3 days at room temperature. For longer storage, freeze layers unfrosted for up to 3 months. The secret to perfect slices? Let the cake cool completely before frosting—patience is everything. The buttermilk reaction needs time to fully develop that signature tender crunch.
Why You'll Love This Recipe
- Foolproof Mixing: I swear by the creaming method here—just butter, sugars, and cocoa whisked together until light and fluffy. No overmixing, no guessing; the recipe’s precise ratios mean the batter comes together in minutes, not mess.
- Deep, Rich Bite: That dark brown sugar and unsweetened cocoa combo? Chef’s kiss. It’s not just chocolate—it’s a molasses-kissed, fudgy depth that lingers, with a subtle caramel note from the brown sugar. Honestly, my first slice had me questioning why I’ve ever bought boxed cake.
- Bakes Like Clockwork: No more sinking centers or dry crumbs—this cake rises evenly and holds its shape. I’ve made it for birthday parties, book club desserts, and even a last-minute office potluck, and it’s never let me down. (Yes, even when I preheat the oven at the last second.)
- Budget-Friendly Luxury: You’re basically making a restaurant-worthy dessert for pennies. Butter and sugar are the stars, but the cocoa and flour stretch every ingredient to its full potential. Leftovers? They’re even better the next day—perfect for lunchbox treats or a quick snack when you’re craving something sweet.
Step-by-step instructions for america's test kitchen old fashioned chocolate cake
This method delivers an incredibly moist, fudgy, and rich chocolate cake with perfect layers every single time.
Prepare the Buttermilk and Cream the Fats
First, create the buttermilk blend by combining the 0.5 cup hot water with the 1 cup buttermilk in a heatproof bowl. Stir in the 2 tsp vanilla extract and let it sit for 5 minutes to ensure the acidity is properly activated—this is crucial for tender crumb. Meanwhile, in a stand mixer fitted with the paddle attachment, beat the 1 cup unsalted butter and 0.5 cup vegetable oil together on medium speed until completely smooth and pale, about 2 minutes.
I always use room-temperature butter and oil for this step because cold fats create pockets of air that disrupt the cake's even texture. Watch the mixture closely—it should transform from a soft paste into a light, fluffy emulsion. This creaming process is where the cake's signature moisture begins to develop, so don't rush it.
Gradually Add Sugars and Dry Ingredients
With the mixer running on low speed, gradually add the 2 cups granulated sugar and 0.5 cup dark brown sugar, mixing just until combined after each addition. The sugars should dissolve completely into the butter mixture, creating a thick, smooth batter. This gradual incorporation prevents sugar crystallization that can make the cake grainy.
In a separate bowl, whisk together the 2.5 cups all-purpose flour, 0.75 cup unsweetened cocoa powder, 0.5 tsp baking soda, 1 tbsp espresso powder, and 0.5 tsp salt. Sift the dry ingredients directly into the wet mixture with the mixer running on low speed. Mix just until the dry ingredients disappear—overmixing develops gluten and makes the cake tough. The batter should be thick and glossy, with no visible flour streaks remaining.
Incorporate Eggs and Final Mixing
Add the 2 whole large eggs, one at a time, mixing on low speed after each addition until fully incorporated. The batter will look momentarily curdled, but it will come together smoothly. Scrape down the sides of the bowl with a silicone spatula to ensure even mixing throughout. This is where the cake's structure begins to form, so thorough but gentle mixing is essential.
Mix the batter on low speed for an additional 30 seconds to ensure complete homogeneity. The final batter should be thick, smooth, and able to hold its shape when dropped from a spoon. If it's too thick, you can gently fold in 1-2 tablespoons of the buttermilk mixture to achieve the perfect consistency. This step is critical for achieving that signature dense, fudgy texture that makes this cake legendary.
Bake in Two Layers for Perfect Results
Preheat your oven to 350°F and divide the batter evenly between two 9-inch round cake pans lined with parchment paper. The pans should be filled about two-thirds full. Bake for 25-30 minutes, or until a toothpick inserted in the center comes out with just a few moist crumbs attached. Rotate the pans halfway through baking for even heat distribution.
Here's the secret: I like to tent the pans loosely with aluminum foil after the first 15 minutes of baking. This prevents the tops from browning too quickly while still allowing steam to escape, which is crucial for that perfectly moist crumb. The cake should spring back slowly when pressed gently in the center—this is your visual cue that it's done.
Cool and Layer for Maximum Fudgy Perfection
Allow the cakes to cool in their pans for 15 minutes, then transfer them to a wire rack to cool completely. This gradual cooling prevents cracking and helps the layers set properly. While the cakes cool, prepare your favorite filling—whether it's chocolate ganache, raspberry jam, or whipped cream. The key is to let the cakes cool completely before assembling, which ensures clean layers and prevents sogginess.
To assemble, place one layer on a serving plate and spread with about 1/3 cup of filling. Top with the second layer and spread the remaining filling over the top. Dust with powdered sugar if desired, but I prefer the rich chocolate flavor to shine on its own. This cake is best served at room temperature, allowing all the flavors to meld together perfectly for that old-fashioned chocolate experience.
Pro Tips For Making America'S Test Kitchen Old Fashioned Chocolate Cake
- Sift the Cocoa: The recipe calls for unsweetened cocoa powder, but not all brands are created equal—some are lumpy or clump like wet sand. Sift it directly into the dry ingredients before measuring, then level it off with a knife. I learned this the hard way after a cake turned dense and bitter—turns out, my "eyeballing" was way off.
- Cream Butter Slowly: The butter in this recipe needs to be soft but not greasy—around 65°F (18°C). If it’s too warm, the sugar won’t incorporate properly, and the cake will be greasy. Stick it in the fridge for 10 minutes if your kitchen’s too hot, then cream it with the sugars at medium speed until light and fluffy, about 3-4 minutes. Rushing this step is how you end up with a brick.
- Don’t Overmix the Batter: Once you add the eggs and vanilla, mix just until combined—no more. Overmixing develops gluten, and this cake is all about that tender, fudgy crumb. Stop when the batter looks smooth but still has a few streaks of flour. I’ve seen people beat this for minutes, and the result? A sad, cakey disappointment instead of the rich, moist texture you’re after.
- Rotate Pans Midway: This cake bakes in two rounds, and ovens always have hot spots. After 20 minutes, swap the pans front to back (or top to bottom if using both racks). It’s a pain, but it guarantees even baking—no dry edges or undercooked centers. My first batch had a sunken middle because I skipped this; now I set a timer to remember.
Essential equipment for great america's test kitchen old fashioned chocolate cake
Stand Mixer Essentials
Your stand mixer is the workhorse of this recipe, so invest in a quality one—I swear by the KitchenAid Artisan Series with the paddle attachment (not the whisk). The paddle's flat edge ensures even mixing of the dense batter without incorporating excess air.
For budget-friendly options, the Cuisinart SM-50 delivers similar performance. Always use the mixer's paddle attachment for this recipe; the whisk would overaerate the batter and ruin the cake's signature dense texture. 💫
Precision Measuring Tools
Accurate measurements are non-negotiable for this cake. Use a digital kitchen scale for the flour and sugars (I recommend the OXO Good Grips model) to ensure consistency. For the cocoa powder, use the spoon-and-level method—don't scoop directly from the bag.
A liquid measuring cup with clear markings is essential for the buttermilk and melted butter. The 1 tbsp of espresso powder needs precise measurement, so a coffee scoop or small measuring spoon works best.
Baking Pans and Parchment
Two 9-inch round cake pans are required for perfect layers. I recommend Wilton Perfect Results Non-Stick pans—they ensure even baking and easy release. Line the bottoms with parchment paper (cut to fit) to prevent sticking and make removal effortless.
For extra insurance, I lightly grease the parchment with vegetable oil before pouring the batter. Never skip the parchment—this cake's dense texture makes it prone to sticking when baked directly in metal pans.
Temperature Control Tools
A reliable oven thermometer is a must—home ovens often run hot or cold. I use the Thermoworks Oven Thermometer to verify my oven reaches exactly 350°F. For the buttermilk blend, a small heatproof bowl and thermometer ensure the water reaches 180°F without boiling.
A timer is critical for the 25-30 minute baking window—set it for 15 minutes before tenting with foil to prevent overbrowning.
Cooling and Storage Gear
For proper cooling, invest in a wire cooling rack that fits your cake pans. The OXO Good Grips rack with adjustable legs works perfectly. For storage, airtight containers like Pyrex glass or Rubbermaid containers keep layers fresh.
If freezing, use quart-sized freezer bags with zip-top seals—leave 1 inch of headspace for expansion. A sharp serrated knife (like the Dexter-Russell) is essential for clean slicing after cooling.
Frosting and Assembly Tools
For assembly, a spatula set with offset and straight edges helps spread fillings evenly. I use a Benriner Offset Spatula for smooth ganache application. A piping bag with a star tip adds decorative flair if you're adding whipped cream rosettes.
For dusting powdered sugar, a fine-mesh sieve ensures an even, professional finish. Keep a damp cloth handy to wipe up any spills—this cake is rich and can be messy to assemble!
Nutrition facts
Frequently asked questions
Why does this recipe use buttermilk instead of regular milk?
The buttermilk creates that signature tender, moist crumb through a chemical reaction with the baking soda. This reaction produces tiny air pockets that make the cake light yet dense. Regular milk lacks the acidity needed for this perfect texture—it would result in a heavier, drier cake. The hot water blend ensures proper acidity activation for maximum tenderness.
Can I make this cake in a single layer instead of two?
Yes, but you'll need a 9x13-inch pan and bake for 35-40 minutes at 350°F. The single layer will be thicker and more fudgy, but won't have the same elegant presentation. For best results, stick with two 9-inch layers—they're easier to handle and create that classic layered effect. If you do use one pan, reduce the oven temperature to 325°F to prevent overbrowning.
What's the best way to store leftover cake?
Wrap each layer tightly in plastic wrap and store at room temperature for up to 3 days. For longer storage, freeze layers (unfrosted) in airtight containers for 3 months. Thaw overnight in the fridge before assembling. The key is preventing moisture loss—never store it uncovered or in the fridge for short-term storage, as this causes drying.
Why does my cake crack on top?
Cracking usually happens from sudden temperature changes or overbaking. Always preheat your oven thoroughly, and tent the pans with foil after 15 minutes to slow browning. Another common cause is opening the oven door too early—resist the urge to peek! For extra insurance, chill the batter 15 minutes before baking, which helps stabilize the structure.
Can I substitute coffee for the espresso powder?
Use 1 tbsp instant coffee granules instead of the espresso powder—it works in a pinch. However, espresso powder provides a more concentrated, consistent flavor without added moisture. For best results, stick with the espresso powder, but if you're out, regular instant coffee will still enhance the chocolate depth. Just be sure to measure it precisely—too much can make the cake taste bitter.