Tessa's Recipe Rundown
Taste: So rich with chocolate flavor but not overpowering.
Texture: Unbelievably moist and fudgy with an insanely velvety frosting.
Ease: The cake layers come together in minutes, and the frosting is simple and straightforward (but tastes so gourmet).
Why You’ll Love This Recipe: My improved cake is quicker, easier, and cheaper to make with deeper chocolate flavor and a more moist texture!
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This is the best chocolate cake I’ve ever made, no joke. It’s deeply chocolatey, ultra-moist, and surprisingly easy. (Apologies in advance for the excessive use of the word “moist.”)
After 7 years of reader feedback and over a year of testing, I simplified the ingredients, improved the texture, and made it more moist than ever. The result is a homemade chocolate cake that stays soft for days and tastes rich without being too heavy or overpowering.
Why I Updated This Recipe
This chocolate cake has been one of the most popular recipes on Handle the Heat for years… but something always bothered me.
I kept getting the same question: “How can I make it more moist?” So I went back to my kitchen and tested it again. And again. And again.
After nearly 10 test batches, multiple recipe testers, and a lot of side-by-side comparisons, I realized the answer was counterintuitive: less chocolate actually made a better chocolate cake. Removing the melted chocolate from the batter improved moisture, texture, and flavor, making the recipe quicker, easier, and cheaper to bake!
Ingredient Notes
I choose every ingredient with care and intention. Many ingredients are tested against other options multiple times before I land on the best result. Listed below are the ingredients that matter most.
Dutch-Process Cocoa Powder
This recipe relies on cocoa powder for the primary chocolate flavor. Cocoa powder actually transmits more chocolate flavor than solid chocolate. Dutch-process cocoa creates a smoother, darker, more balanced chocolate taste without bitterness.
Espresso Powder + Hot Water (Or Coffee)
Espresso powder intensifies chocolate flavor without making the cake taste like coffee. Blooming cocoa powder in hot liquid releases fat-soluble flavor compounds, giving the cake a deeper chocolate taste. Hot coffee works too, as well as just hot water if you don’t drink coffee.
Light Brown Sugar
Brown sugar adds moisture and softness thanks to its molasses content. In testing, replacing granulated sugar with all brown sugar yielded a more moist and flavorful cake that stayed moist for longer.
Sour Cream
This is a key moisture and flavor ingredient! The acidity activates the baking soda and, coupled with the fat content, tenderizes the texture and balances the sweetness with its distinct tang. Use full-fat for best results. You can also use full-fat plain yogurt.
Eggs
Eggs are key to both structure and richness. Room-temperature eggs emulsify better, creating a smoother batter and more even crumb. I have yet to find a suitable substitute for eggs.
Oil (Not Butter)
Oil stays liquid at room temperature, which keeps this chocolate cake moist for longer than butter-based cakes. Use any neutral oil that doesn’t solidify: vegetable, canola, avocado, etc., but not coconut oil.
How to Make Chocolate Cake (Step by Step)
Prep the pans and oven
Preheat your oven to 350°F. Line two 8-inch round cake pans with parchment rounds (I like these ones with pull tabs!) and spray with nonstick spray (I like Baker’s Joy). This ensures a clean release.
Bloom the cocoa
Pour boiling water over the cocoa and espresso powder (or use coffee). Whisk until smooth and glossy. Set aside to cool completely. This “blooms” the chocolate flavor compounds in the cocoa.
Mix the dry ingredients
In a large bowl, whisk together the flour, salt, and baking soda. Add the brown sugar and whisk or use your fingers to break up any clumps until it looks like sand.
Combine the wet ingredients
In a separate bowl, whisk the sour cream, oil, eggs, and vanilla until smooth.
Make the batter
Create a well in the dry ingredients and pour in the wet mixture. Mix gently from the center outward until mostly combined. Avoid overmixing, which can cause “tunnels” in your baked cake or make the final texture rubbery.
Add the cocoa mixture
Pour in the cooled (!) cocoa mixture and whisk until the batter is smooth and evenly combined. If this mixture is too hot, it’ll overly activate the baking soda and cause doming.
Bake
Divide evenly between pans (about 740 grams per pan if you’re using a scale). Tap pans on the counter to remove air bubbles. Bake 32–35 minutes, until a toothpick comes out with moist crumbs.
Cool completely
Cool in pans for 30 minutes, then turn out onto a rack and cool fully before frosting. For even easier frosting, chill the cake layers in the fridge for 30 minutes beforehand.
Cake Decorating Tips
There are a few products + tricks that make cake decorating a breeze. Luckily, this recipe is particularly easy to assemble and decorate. The cake layers are sturdy and the frosting is so velvety smooth that it’s perfect for beginners.
- Parchment Strips: Cut and tuck rectangular strips of parchment underneath the border of your base cake layer to catch stray frosting for quick and easy cleanup and presentation.
- Cake Leveler (optional): If your cake has domed at all, this makes easy work of leveling it flat for easier assembly and frosting. You can also use a serrated knife.
- Cake Turntable (optional): This is basically a lazy susan for cake, and it makes decorating so quick, easy, and enjoyable. I like to place my cake plate on top of this so I don’t need to worry about moving a frosted cake later.
- Offset Spatula: Practically an essential tool for cake decorating with any semblance of smooth and even frosting.
Sprinkle of Science
Solid chocolate firms up as it cools. That’s because it’s saturated fat, like butter. This can create a tighter crumb and denser texture in cake that dries out faster.
Cocoa powder, on the other hand, delivers intense chocolate flavor without adding a ton of saturated fat that solidifies. Combined with oil (which stays liquid), the result is a cake that’s softer, more flavorful, and stays moist longer.
This recipe is rich, but sturdy. It’s not prone to sinking, unlike many other chocolate cake recipes. However, if it’s underbaked, it will likely sink in the center. Give your oven an extra 10 minutes to preheat, and only remove the cake layers when a cake tester or toothpick comes out with moist crumbs (no wet batter!).
Storage & Make ahead
Frosting: Cover and refrigerate for up to 2 days. Bring to room temperature and re-whip before using. It will oxidize (darken in color), but this won’t affect flavor or texture.
Unfrosted cake layers: Wrap and freeze for up to 2 months.
Frosted cake: Refrigerate for up to 2 days. Serve chilled for an extra fudgy cake, if desired!
Freezing leftovers: Freeze slices for up to 2 months. Freeze on a parchment-lined baking sheet until solid, then wrap in plastic and place in an airtight container. Thaw overnight in the fridge.
Test Kitchen Behind-the-Scenes
This recipe underwent about 20 iterations between myself and four recipe testers in four different states.
We experienced just about every issue you could imagine: sinking, doming, tunneling, dry edges, sticky cake layers, etc. I gave away multiple cakes and involved many friends in taste testing! It was a journey.
FAQs
Oil, brown sugar, and sour cream keep this chocolate cake moist. Oil stays liquid at room temperature, while brown sugar and full-fat sour cream prevent drying.
Yes. Replace the espresso powder and water with hot water only. The cake won’t taste like coffee either way.
I adore my Fat Daddio’s 8-inch cake pans. I prefer the 2-inch deep size. If you use 3-inch-deep cake pans, note that you may experience more cake doming.
I haven’t tested that, but I do have a Chocolate Sheet Cake recipe already!
I wrote this recipe with my favorite Chocolate American Buttercream because it’s easy, smooth, and balances the cake without overpowering it. However, you can also use my Chocolate Swiss Meringue Buttercream if you prefer.
Big holes, or tunnels, happen when the batter is overmixed or ingredients aren’t at room temperature. Overmixing forms strong gluten strands that trap air bubbles, creating holes. To prevent this, mix just until combined, use room-temperature ingredients, and tap your pans before baking to release large air pockets. Also, try sifting your dry ingredients!
This is often due to underbaking your cake. Make sure your cake tester or toothpick comes out with moist crumbs, not wet crumbs. Check out my article on how to prevent sinking cakes here.
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Ingredients
For the cake:
- 1 cup (85 grams) Dutch-process cocoa
- 2 teaspoons instant espresso powder*
- 1 cup (237 grams) boiling water
- 1 3/4 cups (222 grams) all-purpose flour
- 1 teaspoon fine sea salt
- 1 teaspoon baking soda
- 2 cups (400 grams) lightly packed light brown sugar
- 1 cup (227 grams) sour cream or full-fat plain yogurt, at room temperature
- 4 large eggs, at room temperature
- 1/2 cup (112 grams) neutral oil, such as canola or avocado oil
- 2 teaspoons vanilla extract
- 1 batch Chocolate Buttercream Frosting
Instructions
Make the cake:
- Preheat the oven to 350°F. Line two 8 by 2-inch cake pans** with parchment rounds and spray evenly with nonstick cooking spray.
- In a small heatproof bowl, whisk together the cocoa powder and espresso powder. Pour the boiling water over mixture and whisk gently until smooth. Set aside to cool completely.
- In a large bowl, either sift*** or whisk together the flour, salt, and baking soda. Add brown sugar and use your hands to break up any clumps until the mixture resembles sand.
- In a separate small bowl, whisk together the sour cream, oil, eggs, and vanilla until smooth. Make a well in the center of the dry ingredients and pour in the wet ingredients. Starting in the center, use a whisk to slowly pull the dry ingredients into the wet until mostly combined. The batter may be slightly lumpy.
- Add the cooled cocoa mixture and whisk until the batter is smooth and evenly combined.
- Divide the batter evenly between the prepared pans (about 740 grams per pan). Tap each pan firmly on the counter a few times to pop any air bubbles. Bake for about 32 to 35 minutes, or until a toothpick or cake tester comes out with moist crumbs attached.
- Cool in the pans for 30 minutes, then (if needed) run a thin knife around the edges and remove to a wire rack to cool completely.
Assemble the cake:
- If your cake has domed at all, level with a serrated knife or cake leveler until it is flat.
- Place one cake layer on a cake turntable or cake stand. Place strips of parchment paper under the cake to prevent a frosting mess.
- Spread a generous, even layer of frosting over the top, pushing it out over the edges slightly. Place the second layer upside down onto the frosting so the top of the cake is nice and flat.
- Using an offset spatula, spread the remaining frosting evenly all over the cake, smoothing the edges. Serve immediately, or cover and refrigerate for up to 2 days. Let sit at room temperature for an hour before serving.
Notes
More Cake Recipes You’ll Love:
This recipe was originally published in 2018, and updated in 2026 with a recipe overhaul, new photos, and more baking tips. Photos by Joanie Simon.
I made this chocolate cake for my dad’s birthday and it was a big hit! PS: Can you see my husband’s smiling proud face in the reflection of the microwave? Ha!
My son wants a vanilla and chocolate cake for his birthday with chocolate iceing. Would this cake work with your best birthday cake as two layers?
Ooo yum, I don’t see why not! You could easily halve this recipe to make one 8-inch cake 🙂 Let us know how it goes!
So far I burned a best birthday cake. Working on #2 try of that one. The chocolate is perfect. Probably going to add a boxed cake in there because all of a sudden I’m feeding 40 ish people…
I made this for my niece’s 5th birthday and it was a huge hit! The cake was so moist and delicious, and the icing was absolutely perfect with it. I made 9-inch cake using one full recipe plus a half batch, and it worked beautifully. This definitely going into my baking book – Thank you for such a fantastic recipe!
Your cake looks absolutely beautiful, Michelle! So happy to hear the recipe was such a hit 🙂
Would applesauce as a substitute for the oil work? I avoid all seed oils and use this substitute in other recipes. Also some cakes need refrigeration. I see you suggest refrigeration on the unfrosted cakes. After it’s frosted do you need to refrigerate?
Hi Wendy! We haven’t tested applesauce as a substitute for the oil, so I can’t say how it would affect the texture, but you’re welcome to experiment if you’d like 🙂 As for storage, you can find the full details above the recipe here: Storage & Make Ahead. Generally, if you’re storing it longer than a day, refrigeration is recommended.
I made this cake in a toaster oven as we don’t have ovens in the country I am in. I used a 8 by 3 inch round cake pan and baked for 22 minutes. It turned out moist, spongy and as perfect as a box cake but better. Not too sweet. Very happy with this recipe.
Is the frosting between the layers a different recipe than the frosting on the outside of the cake? It looks like it is a different texture and a different colour, though in your pictures of the cakes you made during the process the frosting looks like same (within a given cake).
Nope, it’s the same frosting, just oxidized (darkened) a bit! This happened because we prepped it the night before. Same taste and texture 🙂
Can I substitute butter for the oil? The only oils we use are olive oil and coconut oil.
Hi Lois! Butter will not work as a substitute as it creates a tighter crumb and denser texture that dries out faster. Do you have a very light tasting olive oil? That could work in a pinch!
As a pro Baker and no seed oils allowed, I use avocado oil mainly. Absolutely, no taste, very healthy. Any olive oil you use will result in a change of taste, mild to strong.
Thank you, Chef Tessa!
Did this recipe get changed? I have been making it for years and am remembering it having baking chocolate sliced thinly that goes in the boiling water as well and also vinegar but nether are listed in the ingredients anymore?
Great eye, yes it did! 🙂 Tessa recently republished this recipe after a lot of testing to improve the moisture and texture (and make it a little simpler and more affordable to bake). You can read more about why—and how—she updated the recipe here.
We’d love for you to give the new version a try, but if you’d prefer the original you’ve been making for years, just email us at [email protected], and we’d be happy to share a copy with you!
I baked this as the bottom layer in a quarter sheet cake. It baked up great, as did the Best Yellow Cake recipe that I used for the top layer. The filling and frosting were the Best Chocolate Buttercream, also delicious!
Both layers came out moist and tasty. They were a huge hit!
The layers look great, Elaine! So happy to hear they were such a hit 🙂
Looks amazing!
I’ve made this recipe before quite a few years ago and it turned out great. I’m planning on doing it again for my niece’s upcoming birthday. Just wondering if you have any thoughts on using cacao butter in this recipe. Not as a substitute for the oil, but perhaps 75/25 oil cacoa butter or a 50/50?
I wouldn’t recommend that. This recipe already has quite a bit of cocoa butter from the bittersweet chocolate. Cocoa butter is super solid at room temperature, so too much will make the cake overly dense, possibly even hard, and will take on a drier texture. Hope that helps!
Thanks for the response!
Made this for my nephew’s second birthday party and everyone loved it and asked for seconds.
I did use another type of filling as I had limited tools available, but already planning to bake it soon and make the buttercream as well.