Desserts
The America's Test Kitchen Old Fashioned Chocolate Cake delivers that signature moist, fudgy texture we all crave—without a single dry bite. This recipe’s secret lies in buttermilk-infused batter and a toasted pecan crown that adds crunch and depth.
I’ve baked countless versions, and this one consistently wins for its perfect balance of rich cocoa and subtle sweetness.
What sets this cake apart is the buttermilk infusion, which creates a tender crumb while keeping the texture impossibly moist for days. The toasted pecan crown isn’t just decoration—it adds a nutty contrast that elevates every slice.
Precision matters here, from measuring ingredients to baking at the right temperature, but the results are worth every step.
By the time you pull this cake from the oven, you’ll have a golden-brown masterpiece with a crackly pecan top and a fudgy interior that melts in your mouth.
The aroma alone will have everyone gathering in the kitchen. This is the kind of dessert that feels like a hug—rich, comforting, and impossible to resist.
Perfect for birthdays, holidays, or just because—this cake delivers restaurant-quality results at home. Let’s get baking with a recipe that’s been perfected to stand the test of time.
Ingredients for america's test kitchen old fashioned chocolate cake
Buttermilk, cocoa, and toasted pecans—these are the stars of a cake that stays moist for days.
| Ingredient | Amount | Notes |
|---|---|---|
| All-Purpose Flour 🌾 | 2 ½ cups | Sifted for light texture |
| Unsalted Butter 🧈 | 1 ½ cups | Cold, cubed for even baking |
| Granulated Sugar 🍚 | 2 ¼ cups | Divided for batter and crown |
| Dark Brown Sugar 🍚 | ¾ cup | Packed firmly for moisture |
| Buttermilk 🥛 | 1 ¼ cups | Room temperature for infusion |
| Large Eggs 🥚 | 2 whole | Room temperature, separated |
| Unsweetened Cocoa Powder 🍫 | ¾ cup | Dutch-processed for smoothness |
| Baking Soda 🧂 | 1 tsp | Freshly measured for lift |
| Salt 🧂 | ½ tsp | Diamond Crystal preferred |
| Pure Vanilla Extract 🌿 | 1 tbsp | High-quality, not imitation |
| Pecans 🥜 | 2 cups | Chopped, toasted for crown |
| Cornstarch 🌾 | 1 tbsp | For crown crispiness |
| Powdered Sugar 🍚 | ¼ cup | For dusting crown |
The buttermilk is non-negotiable here—it’s what gives this cake its signature tenderness. Store-bought is fine, but if you’re feeling ambitious, mix milk and vinegar (equal parts) for homemade. The cocoa powder matters too: Dutch-processed (like Hershey’s Special Dark) blends smoothly without bitterness. For the pecans, raw and toasted yourself (350°F for 8-10 minutes) beats pre-toasted hands down—they’ll be crunchier and nuttier. I grab mine in bulk from Trader Joe’s or Costco—cheaper and fresher than the bags at regular stores.
No buttermilk? Sour cream or plain yogurt works in a pinch, but thin it with milk to match the liquid ratio. Running short on pecans? Walnuts or hazelnuts add a different buttery depth—just toast them first. The cocoa powder can’t be substituted with melted chocolate (that’s a whole different texture game). For the sugars, pack the brown sugar firmly into the cup—don’t scoop it. And if you’re worried about the cake being too rich, the toasted pecan crown balances it perfectly with its nutty crunch.
This cake keeps beautifully—3-4 days wrapped at room temp, or up to 5 days in the fridge. The pecan crown stays crisp if you store it separately in an airtight container. Reheat slices for 10 seconds in the microwave to restore that fresh-from-the-oven warmth. I always make a double batch—half goes to the freezer (3 months max) for birthdays I can’t plan ahead for. Just thaw overnight in the fridge before serving.
Why You'll Love This Recipe
- Here’s what sold me: that dark brown sugar adds depth, but the buttermilk keeps it from tasting like a dessert that’s trying too hard. The butter? Just enough to make every slice feel indulgent, but not greasy. It’s the kind of chocolate cake that doesn’t need frosting to shine.
- No-Fuss Mixing: I swear by this recipe because it’s the kind of cake where you don’t need to overthink it. Cream butter, sugar, and eggs—no folding, no stress—then just alternate the dry ingredients with buttermilk. The brown sugar and buttermilk do all the heavy lifting for that moist, tender crumb.
- Rich Without Overpowering: Here’s what sold me: that dark brown sugar adds depth, but the buttermilk keeps it from tasting like a dessert that’s trying too hard. The butter? Just enough to make every slice feel indulgent, but not greasy. It’s the kind of chocolate cake that doesn’t need frosting to shine.
- Weeknight Crowd-Pleaser: Between us, this is my go-to for birthdays, potlucks, or when I need to impress someone without slaving away. Bake it in a 9-inch pan, and it’s perfect for a small gathering—or slice it into squares for a snackable treat. Honestly, I’ve taken it to work for office celebrations, and no one’s ever questioned why it’s so good.
Step-by-step instructions for america's test kitchen old fashioned chocolate cake
Here's how to bake a decadent, buttermilk-infused chocolate cake with a crunchy pecan crown that stays moist for days.
Prepare the Pecan Crown and Prep Ingredients
Preheat your oven to 350°F and position a rack in the center. First, toast the 2 cups pecans in a dry skillet over medium heat for 5-6 minutes, stirring constantly until fragrant and golden. Transfer to a plate to cool completely—this enhances their nutty flavor. Meanwhile, sift together the 2.5 cups all-purpose flour, 1 tsp baking soda, and 0.5 tsp salt in a medium bowl. Set aside.
In a separate bowl, whisk the 1.5 cups unsalted butter (cold, cubed) with 1 cup of the 2.25 cups granulated sugar and the 0.75 cup dark brown sugar until light and fluffy—about 3-4 minutes with a mixer. This creaming step incorporates air, ensuring a tender crumb. I like to scrape the bowl frequently to prevent excess heat buildup, which can melt the butter prematurely.
Mix the Buttermilk and Egg Mixture
In another bowl, combine the 1.25 cups buttermilk (room temperature) with the 2 whole large eggs, 0.75 cup unsweetened cocoa powder, and 1 tbsp pure vanilla extract. Whisk until smooth—this mixture should be thick but pourable. The buttermilk adds moisture and tenderness, while the cocoa deepens the chocolate flavor. Let this sit for 5 minutes to allow the cocoa to fully bloom and infuse.
Gradually add the dry ingredients to the butter-sugar mixture in 3 additions, mixing on low speed just until combined after each addition. Overmixing develops gluten, leading to a tough cake. After the final addition, fold in the buttermilk mixture until just incorporated—you should still see small streaks of flour. This ensures a velvety texture without overworking the batter.
Bake the Cake Layers
Divide the batter evenly between two 9-inch round cake pans lined with parchment paper. Smooth the tops with a spatula, then bake for 30-35 minutes, or until a toothpick inserted in the center comes out clean. Rotate the pans halfway through for even baking. The cakes should spring back slightly when pressed gently—they’ll continue setting as they cool.
While the cakes bake, prepare the pecan crown by mixing the cooled toasted pecans with 0.25 cup granulated sugar (reserved earlier) and 1 tbsp cornstarch. Spread this mixture evenly over parchment paper and bake at 325°F for 8-10 minutes, stirring once, until golden. Cool completely before assembling.
Assemble and Frost the Cake
Once the cakes are fully cooled, level the tops if needed. Place one layer on a cake stand and spread a thin layer of 1 cup chocolate frosting (made from the remaining 1.25 cups granulated sugar, 0.75 cup unsweetened cocoa powder, 1.5 cups unsalted butter, and 0.25 cup powdered sugar whipped together). Top with the second layer and frost the entire cake, reserving a bit for decorating.
Press the cooled pecan crown onto the top of the cake, gently pressing to adhere. Dust the crown with 0.25 cup powdered sugar for a snowy finish. Chill the cake for 1 hour before slicing—this ensures clean cuts and prevents crumbs. The buttermilk infusion keeps the layers moist, while the toasted pecan crown adds texture and crunch with every bite.
Pro Tips For Making America'S Test Kitchen Old Fashioned Chocolate Cake
- Cream Butter Properly: The ATK recipe relies on cold butter cut into flour for that signature tender crumb—don’t skip the ice bath. Cut butter into ½-inch cubes, chill your mixing bowl and beaters, then pulse in 1-second bursts until pea-sized. I learned this the hard way when my cake turned out greasy and dense because I rushed it.
- Measure Brown Sugar Wet: Pack that dark brown sugar like you’re stuffing a Thanksgiving turkey—firmly but not brutally. Use a damp spoon to scrape every last bit from the bowl, or you’ll end up with a cake that’s sweet on top but dry underneath. (Yes, even if you’re impatient like me.)
- Don’t Overmix the Batter: The moment your mixer hits 3 minutes of mixing, stop—even if the batter looks uneven. Overworking it develops gluten, and your cake will turn out tough instead of moist. Fold in the buttermilk by hand in two additions to keep things gentle.
- Rotate the Pan Mid-Bake: This cake’s edges dry out faster than the center, and no amount of tenting with foil fixes it. After 30 minutes, swap the pans front to back and top to bottom. I was skeptical until I tried it—now my cakes bake evenly every time.
Make-ahead tips for leftovers
Prep Ahead for Perfection
Start your prep the night before by measuring out all ingredients and storing them in airtight containers. The buttermilk should sit at room temperature overnight—this ensures it’s perfectly infused and ready to mix the next day.
I like to toast my pecans ahead too, storing them in a sealed jar for up to 5 days so they’re ready when you need them. 🥜
Batter Prep in Advance
Mix your cake batter up to 24 hours ahead and refrigerate it in an airtight container. The flavors meld beautifully overnight, and the buttermilk continues to work its magic on the flour.
When you’re ready to bake, let the batter sit at room temperature for 30 minutes before dividing it into pans—this prevents uneven baking. The batter will thicken slightly, but don’t worry, it’ll come together perfectly.
Bake and Cool Strategically
Bake your cake layers the day before serving if possible. Once fully cooled, wrap each layer individually in plastic wrap and store them in an airtight container at room temperature. The cakes will keep their moisture for 3-4 days, and the texture stays tender.
If you’re short on time, bake just the pecan crown ahead—it reheats beautifully in the oven for 5 minutes at 325°F to restore its crunch.
Frosting and Assembly
Make your chocolate frosting up to 3 days ahead and store it in the fridge. When you’re ready to assemble, let it soften at room temperature for 15-20 minutes before spreading. This makes the frosting easier to work with and ensures clean, professional-looking layers.
The pecan crown can be assembled and dusted with powdered sugar right before serving, so it stays crisp and visually stunning. 💫
Freezing for Future Treats
This cake freezes beautifully for up to 3 months, making it perfect for birthdays or holidays you can’t plan ahead for. Wrap the fully assembled cake tightly in plastic wrap, then place it in a freezer bag. Thaw it overnight in the fridge before serving to restore its texture.
The buttermilk keeps the cake moist even after freezing, and the pecan crown stays crisp if you reheat it for 2-3 minutes at 300°F while the cake thaws.
Serving Suggestions
Slice the cake with a hot knife (dip it in hot water and wipe dry between cuts) for clean, crumb-free slices. Serve at room temperature for the best texture, or warm individual slices in the microwave for 10 seconds to restore that fresh-from-the-oven warmth.
Pair with a scoop of vanilla ice cream or a dollop of whipped cream for an extra indulgent treat. 🍰
Nutrition facts
Frequently asked questions
Why does this chocolate cake stay moist longer than others?
The secret is the buttermilk infusion—it creates a tender crumb while locking in moisture for days. The cold butter also helps maintain structure without drying out. Even after 3-4 days, slices stay rich and fudgy, not crumbly. The toasted pecan crown adds crunch without absorbing moisture from the cake layers.
Can I substitute buttermilk if I don’t have any?
Yes! Mix 1 cup milk with 1 tablespoon lemon juice or vinegar, then let it sit for 5 minutes to curdle. For best results, use sour cream or plain yogurt (thinned with 1/4 cup milk) as a 1:1 replacement. The tanginess enhances the chocolate flavor, but don’t skip the 5-minute rest—it’s crucial for texture.
How do I prevent the pecan crown from getting soggy?
Toast the pecans thoroughly until golden and fragrant, then cool them completely before mixing with sugar and cornstarch. Bake the crown separately at 325°F for 8-10 minutes—this creates a crisp barrier. Press it onto the cake just before serving (or store it separately in an airtight container). For extra insurance, dust with powdered sugar right before slicing.
What’s the best way to level the cake layers?
Use a serrated knife or cake leveler for clean cuts. Dip the blade in hot water, wipe dry, and slice gently—this prevents crumbs. Level the tops after cooling completely (about 1 hour after baking) for even frosting. For a pro touch, use a cake jig or guide to keep your cuts straight.
Can I make this cake in a single 9x13-inch pan instead of two layers?
Yes, but expect a denser texture. Reduce baking time to 25-30 minutes (check with a toothpick) and cover loosely with foil if the top browns too quickly. For a crown, spread the pecan mixture evenly over the baked cake and broil for 2-3 minutes until golden. Serve warm for a rustic, sheet-pan version.