Desserts
This Hershey's deep dark chocolate cake delivers layers of fudgy intensity that rival any bakery—with a secret espresso boost that deepens the flavor profile. The rich, velvety texture comes from using 70% cocoa Hershey's deep dark chocolate and precise baking techniques that ensure a moist crumb without being cakey.
I've perfected this recipe over years of testing, and the difference is noticeable from the first bite.
The secret weapon here is the espresso powder, which enhances the chocolate's natural bitterness while adding complexity that makes this cake stand out.
You'll need just 15 minutes of active prep time, followed by 30-35 minutes in the oven, and the result is a decadent dessert that's perfect for special occasions or when you crave something truly indulgent. The frosting—made with the same deep dark chocolate—ties everything together into a cohesive, restaurant-quality treat.
What you'll end up with is a fudgy, moist cake with a crackly chocolate top that's impossible to resist. Each slice delivers layers of rich cocoa flavor, balanced by the subtle coffee notes that make it uniquely sophisticated.
This isn't your average chocolate cake—it's a showstopper that pairs beautifully with whipped cream, fresh berries, or a dusting of cocoa powder. The recipe scales easily, so you can make it for a crowd or just enjoy a single slice when the craving hits.
Whether you're baking for a celebration or treating yourself to a decadent dessert, this recipe delivers professional-quality results without requiring advanced skills. The key is precision in measuring and baking, but even beginners will achieve impressive results. Let's get started on creating your own deep, dark chocolate masterpiece.
Ingredients for hershey's deep dark chocolate cake
Nine essential ingredients plus a secret espresso boost for unmatched depth and fudgy perfection.
| Ingredient | Amount | Notes |
|---|---|---|
| Hershey's Deep Dark Chocolate (70% Cocoa) 🍫 | 8 oz | High-quality, unsweetened chocolate |
| All-Purpose Flour 🌾 | 2 cups | Sifted for even texture |
| Granulated Sugar 🍚 | 2 cups | White or light brown |
| Unsalted Butter 🧈 | 1 ½ cups | Room temperature, full-fat |
| Large Eggs 🥚 | 2 whole | Room temperature, separated |
| Instant Espresso Powder ☕ | 2 tbsp | High-quality, no graininess |
| Vanilla Extract 🌿 | 2 tsp | Pure, high-quality vanilla |
| Baking Powder 🍞 | 1 tsp | Freshly measured |
| Salt 🧂 | ½ tsp | Fine sea salt |
| Hot Water 💧 | ½ cup | Freshly boiled |
| Sour Cream 🥛 | ½ cup | Full-fat, room temperature |
| Dark Chocolate Frosting (70% Cocoa) 🍰 | 2 cups | Homemade or quality store-bought |
| Heavy Whipping Cream 🥛 | 1 cup | Cold, for frosting |
| Powdered Sugar 🍚 | 3 cups | Sifted for smooth texture |
The chocolate here is non-negotiable—Hershey's 70% deep dark delivers that signature bitterness without tasting like baking chocolate. Costco or grocery store bakery sections usually carry it, but if you're hunting for the best, check the international aisle. The espresso powder? Starbucks Via or local coffee shops sell it in small jars—just make sure it's instant. The butter needs to be room temperature (press a finger into it; if it leaves a dent, you're good), and Land O'Lakes or Plugrah are reliable brands. Sift the flour and powdered sugar together to avoid lumps—trust me, it makes all the difference in that velvety crumb.
No instant espresso? Dissolve 2 tbsp strong brewed coffee in the hot water instead. Swapping the chocolate? Ghirardelli 60% or Valrhona Abinao work beautifully—just reduce the sugar slightly. Short on sour cream? Plain Greek yogurt at half the amount keeps it moist. For the frosting, if you're making it from scratch, use the same deep dark chocolate to tie the flavors together. Pre-made frosting? Betty Crocker or Wilton dark chocolate are solid choices, but add an extra 1 tbsp of espresso powder to the mix for that signature kick.
This cake keeps beautifully—5 days at room temperature wrapped tightly in plastic, or 2 weeks in the fridge if you want to extend its life. The frosting, though, is best used within 3 days (it doesn’t keep as well). I always make a double batch of frosting and freeze half in an airtight container—thaw it overnight in the fridge, then whip it back to perfection. For serving, dust with cocoa powder or a sprinkle of flaky sea salt to balance the sweetness. Leftovers? Slice and freeze for up to 3 months—just thaw at room temperature before serving.
Why You'll Love This Recipe
- Foolproof Mix-In: I swear by this recipe—just melt butter, mix in the Hershey’s Deep Dark bar (no chopping, no fuss), then fold in dry ingredients. The eggs bind it all together while you’re still wiping flour off your hands.
- Rich Without Bitterness: That 70% cocoa isn’t overpowering—it’s deep, like a slow dance with chocolate. The sugar and butter soften the edge, so every slice tastes like a hug from a bakery, not a science experiment.
- Date-Night Ready: Serve it warm with vanilla ice cream for a restaurant-worthy dessert that takes less time than ordering takeout. (Yes, even on a Tuesday night.)
- Budget Luxury: A single bar of Hershey’s Deep Dark does the work of pricier chocolate—no need to splurge. The butter and eggs keep it moist for days, so leftovers taste just as good the third time around.
Step-by-step instructions for Hershey's deep dark chocolate cake
This method delivers fudgy, intensely rich layers with a secret espresso boost that cuts through the sweetness beautifully.
Melt Chocolate and Prepare the Batter Base
First, chop the 8 oz Hershey's Deep Dark Chocolate (70% Cocoa) into small, even pieces. Place them in a heatproof bowl set over a pot of simmering water—this is a double boiler. Stir occasionally until completely melted and smooth, about 5-7 minutes. The chocolate should reach 115°F and have a glossy sheen.
In a separate large mixing bowl, whisk together the 2 cups Granulated Sugar and 1.5 cups Unsalted Butter (room temperature) until light and fluffy, about 3 minutes. This step is crucial—you're incorporating air that will create that signature tender crumb. Add the melted chocolate and mix until fully combined, scraping down the sides of the bowl as needed. The mixture should be silky and homogeneous.
Combine Wet Ingredients and Fold in Dry Components
Create a well in the center of the wet mixture and add the 2 whole Large Eggs (room temperature), 2 tbsp Instant Espresso Powder, and 2 tsp Vanilla Extract. Gently fold these ingredients together using a spatula, being careful not to overmix. The espresso powder will deepen the chocolate flavor and prevent the cake from tasting overly sweet.
In a separate bowl, sift together the 2 cups All-Purpose Flour, 1 tsp Baking Powder, and 0.5 tsp Salt. With the mixer on low speed, gradually add the dry ingredients to the wet mixture, alternating with the 0.5 cup Hot Water and 0.5 cup Sour Cream. Begin and end with the flour mixture. Mix just until combined—overmixing develops gluten and makes the cake dense. The batter should be thick but pourable.
Bake the Cake Layers to Perfect Doneness
Preheat your oven to 350°F and grease two 9-inch round cake pans with butter or baking spray, then line the bottoms with parchment paper. Divide the batter evenly between the pans. Tap each pan firmly on the counter to remove any air bubbles and ensure even baking. Bake for 25-30 minutes, until a toothpick inserted into the center comes out clean and the edges are just beginning to pull away from the pan.
Here's the thing—don't overbake. The cake will continue cooking as it cools. Let the layers cool in their pans for 10 minutes, then transfer to a wire rack to cool completely. This cooling step is essential for clean slicing and proper layering later. The internal temperature should be below 100°F before assembling.
Assemble with Rich Chocolate Frosting
While the layers cool, prepare the Dark Chocolate Frosting (70% Cocoa). Spread 1 cup evenly over the first layer, then place the second layer on top. Press down gently to create an even surface. The frosting should be thick enough to hold the layers together but still spreadable with a spatula.
In a chilled mixing bowl, beat the 1 cup Heavy Whipping Cream until soft peaks form. Gradually add the 3 cups Powdered Sugar (sifted) and continue beating until stiff, glossy peaks form. This will be your finishing frosting. Spread this over the entire cake, then smooth the surface with an offset spatula. For extra indulgence, pipe decorative rosettes or drizzle melted chocolate around the edges.
Chill and Serve for Maximum Richness
Refrigerate the cake for at least 2 hours before serving—this allows the flavors to meld and the frosting to set properly. The cake will keep in the fridge for up to 5 days, though I promise it won't last that long. When ready to serve, let it sit at room temperature for 15-20 minutes to soften slightly.
Slice with a warm, wet knife for clean cuts and serve each piece with a dollop of whipped cream or a dusting of cocoa powder. The contrast between the fudgy layers and the velvety frosting is what makes this cake truly special. Here's the secret: the espresso powder enhances the chocolate flavor without adding bitterness, creating a complex, satisfying bite.
Pro Tips For Making Hershey'S Deep Dark Chocolate Cake
- Melt Chocolate Slowly: I learned this the hard way—dumping chopped Hershey’s Deep Dark into hot butter causes seizing. Instead, melt the butter first, then whisk in the chocolate a few pieces at a time, letting each one fully dissolve before adding more. The goal is a smooth, glossy ganache, not a lumpy mess.
- Sift That Flour: This isn’t just about aeration—it’s about avoiding dense cake. The Deep Dark chocolate already packs a heavy cocoa punch, so sift the flour twice if you can. I skip this sometimes, and the texture suffers (yes, even with the extra eggs).
- Don’t Overmix Wet Ingredients: Once you fold in the eggs, stop mixing the second everything’s just combined. Overmixing introduces too much air, and this cake—with its high cocoa content—needs structure, not fluff. A few lumps are fine; a stiff batter is not.
- Test Doneness with a Toothpick: The cake will look underdone when the edges pull away. Insert a toothpick into the center—it should come out with moist crumbs, not wet batter or dry flour. If it’s sticky, bake 5–10 more minutes. Trust the toothpick, not your eyes.
Pro cooking tips for this recipe
Temperature Precision
The oven temperature matters more than you might think. Preheat your oven to exactly 350°F—any hotter, and the cake will dry out; any cooler, and it won’t rise properly.
I use an Oven Thermometer (like the Thermoworks Oven Thermometer) to verify accuracy, because most home ovens run 25°F hotter than set. This ensures even baking and that signature fudgy texture. 🌡️
Double Boiler Technique
Melting the chocolate is where the magic happens, but doing it wrong can ruin everything. Use a double boiler—place a heatproof bowl over a pot of simmering water, ensuring the bottom of the bowl doesn’t touch the water.
Stir the chocolate constantly until it reaches 115°F and becomes glossy. If it overheats, tiny sugar crystals will form, making the cake grainy. I’ve learned this the hard way—trust the process!
Room Temperature Ingredients
Room temperature butter, eggs, and sour cream are non-negotiable for a light, tender crumb. Press the butter into a dent with your finger—if it springs back, it’s too cold. Let eggs sit in warm water for 5 minutes to speed this up.
Cold ingredients cause uneven mixing, leading to dense or cracked layers. I always take mine out of the fridge 1 hour before baking.
Espresso Powder Trick
The 2 tbsp instant espresso powder isn’t just for flavor—it’s a game-changer. It deepens the chocolate’s richness while balancing sweetness. Use Starbucks Via or Mount Hagen for the smoothest texture. If you don’t have espresso powder, dissolve 2 tbsp strong brewed coffee in the hot water instead.
The key is to fold it in gently after mixing the wet ingredients to avoid clumping.
Baking Time Mastery
Bake the layers for 25-30 minutes—no longer! The cake will continue cooking as it cools. Insert a toothpick into the center; it should come out with a few moist crumbs, not wet batter.
Overbaking leads to dryness, while underbaking causes a gummy texture. I set a timer and check at 25 minutes—this cake forgives a minute or two, but not much more.
Layer Cooling Strategy
Let the layers cool in their pans for 10 minutes before transferring to a wire rack. This prevents them from cracking when removed. Once cooled completely (internal temp below 100°F), they’ll slice cleanly and assemble beautifully.
Skipping this step is a common mistake—I’ve seen cakes collapse when layers aren’t fully cooled before frosting. Patience here pays off in perfect slices. ✨
Nutrition facts
Frequently asked questions
Why does this recipe use espresso powder?
The 2 tbsp instant espresso powder enhances the chocolate's natural bitterness while balancing sweetness, creating a more complex flavor profile. It also prevents the cake from tasting overly sweet. Think of it as a secret weapon for depth—like adding a pinch of salt to chocolate!
Can I make this cake in a single layer instead of two?
Use a 9x13-inch pan and bake for 35-40 minutes at 350°F. The baking time increases slightly because the single layer has more surface area exposed to heat. Reduce the frosting to 1.5 cups for a simpler presentation.
What if I don't have Hershey's deep dark chocolate?
Use 70% cocoa chocolate bars like Ghirardelli or Valrhona instead. Avoid milk chocolate—it lacks the intensity this recipe needs. If you can't find 70%, 60% cocoa works in a pinch, but reduce the sugar by 2 tbsp to maintain balance. The flavor will still be rich, just slightly sweeter.
How do I fix a cake that's cracked or sunken?
Cracking usually happens when layers cool too quickly or aren't fully baked. For minor cracks, frost the cake anyway—the frosting will camouflage them. If the cake is sunken, it likely overbaked. Next time, remove it from the oven when the toothpick comes out with moist crumbs (not wet batter). A warm, wet knife helps create clean slices even with imperfections.
Can I make this cake ahead of time?
Yes! Assemble the cake 1 day ahead and refrigerate it. Bring it to room temperature for 1 hour before serving to soften the frosting. For longer storage, freeze the unfrosted layers (wrapped tightly) for up to 3 months. Thaw overnight in the fridge, then frost and serve. The flavors actually improve with time!