Hershey Bar Cake Recipe

If you love chocolate cake but want something that leans richer and more indulgent than a standard cocoa powder recipe, this Hershey Bar Cake delivers exactly that. Melted milk chocolate bars go straight into the batter, giving every bite a creamy, fudgy depth that boxed mixes cannot match.

The whole process takes about 50 minutes from start to finish, including cooling time, and I would call it a beginner-friendly recipe. The only step that needs a little attention is melting the chocolate without overheating it — go slow in 20-second bursts and you will be fine. This small batch cake serves four, making it ideal for a quiet birthday or a dinner party where you want dessert without a mountain of leftovers.

Why You’ll Love This Recipe

• Small batch perfection — This recipe bakes in a 6-inch pan and serves exactly 4 people, so no sad leftover slices are drying out in the fridge.
• Real chocolate flavor — Using actual Hershey’s milk chocolate bars instead of only cocoa powder creates a smoother, creamier chocolate taste that feels luxurious.
• Easy enough for weeknights — The batter comes together in one bowl with basic pantry staples, and the ganache sets at room temperature while the cake cools.

What Makes This Hershey Bar Cake Special

The key difference here is folding melted milk chocolate into the batter alongside the usual cocoa powder. That double hit of chocolate creates a crumb that is moist, tender, and almost brownie-like in texture. The ganache on top uses the same chocolate bars, so the flavor stays consistent from the first forkful to the last. It is the kind of dessert that feels fancy but relies on straightforward techniques.

Ingredients You’ll Need

Dry Ingredients

• 1/2 cup all-purpose flour — Provides structure without making the cake tough. Spoon and level it into your measuring cup rather than scooping directly.
• 1/2 cup granulated sugar — Sweetens the cake and helps keep it tender. Do not reduce the sugar or the texture will suffer.
• 1/4 cup unsweetened cocoa powder, sifted — Sifting removes lumps and ensures even distribution. Natural cocoa works best here for a balanced flavor.
• 1/2 teaspoon baking soda — Reacts with the cocoa’s natural acidity to help the cake rise properly.
• 1/4 teaspoon baking powder — Adds extra lift alongside the baking soda for a soft, even crumb.
• 1/4 teaspoon kosher salt — Balances the sweetness and sharpens the chocolate flavor.

Wet Ingredients

• 1 large egg, at room temperature — A cold egg can seize the melted chocolate and make the batter lumpy. Let it sit out for 30 minutes before starting.
• 1/4 cup whole milk, at room temperature — Room temperature milk blends smoothly into the batter and helps the cake rise evenly.
• 1/4 cup vegetable oil — Keeps the cake moist for days. You can swap in melted coconut oil if you prefer, but do not use butter here — it will make the cake denser.
• 1/2 teaspoon vanilla extract — Rounds out the chocolate flavor without overpowering it.

For the Ganache

• 3 ounces Hershey’s milk chocolate bars, finely chopped — Finer pieces melt faster and more evenly. Chop the bars with a sharp knife just before heating the cream.
• 1/4 cup heavy cream — Creates a silky, pourable ganache. Do not substitute half-and-half or milk — the fat content is essential for the right consistency.
• 1 tablespoon unsalted butter, cut into small pieces — Adds shine and a slightly softer set to the ganache.

Equipment Needed

• 6-inch round cake pan — This is the exact size for a small batch. If you only have a 9-inch pan, double the recipe and adjust the baking time.
• Parchment paper rounds — Lining the bottom of the pan prevents sticking and makes removing the cake much easier.
• Microwave-safe bowl — For melting the chocolate in controlled 20-second bursts. A glass measuring cup also works well.
• Offset spatula — Spreads the ganache evenly over the top and helps it drip down the sides. A butter knife works in a pinch.
• Wire cooling rack — Lets air circulate under the cake so it cools fully without a soggy bottom.

Instructions to Prepare Hershey Bar Cake

These steps follow the recipe exactly, so read through each one before you start. The batter comes together quickly, and the ganache needs a brief rest to reach the right pourable texture.

• Prepare the pan — Preheat the oven to 350°F (177°C). Grease a 6-inch round cake pan with butter or nonstick spray, then line the bottom with a parchment paper round. This double protection keeps the cake from sticking.
• Mix dry ingredients — In a medium bowl, whisk together the flour, sugar, cocoa powder, baking soda, baking powder, and salt until evenly combined. Whisking ensures the leaveners and cocoa are fully distributed for even rising.
• Combine wet ingredients — In a separate small bowl, whisk the egg, milk, oil, and vanilla extract until smooth and slightly frothy. The egg should be at room temperature to incorporate easily into the batter.
• Melt the chocolate — Melt the 2 ounces of chopped Hershey’s bars in a microwave-safe bowl in 20-second bursts, stirring after each, until fully melted and smooth. Be careful not to overheat or the chocolate will seize into a gritty mess.
• Make the batter — Pour the wet ingredients into the dry ingredients and stir with a rubber spatula until just combined — a few streaks of flour remaining is fine. Then fold in the melted chocolate until the batter is homogeneous and glossy.
• Bake the cake — Scrape the batter into the prepared pan and spread evenly. Bake for 25 to 30 minutes, or until a toothpick inserted into the center comes out with just a few moist crumbs attached. The cake should spring back lightly when pressed.
• Cool the cake — Let the cake cool in the pan on a wire rack for 10 minutes, then turn out onto the rack to cool completely, about 1 hour. Do not rush this step or the cake may stick to the pan.
• Make the ganache — While the cake cools, place the remaining 3 ounces of chopped Hershey’s bars and the butter in a heatproof bowl. Heat the heavy cream in a small saucepan over medium heat until small bubbles form around the edge — do not let it boil vigorously.
• Combine and rest — Pour the hot cream over the chocolate and butter. Let it sit undisturbed for 2 minutes, then whisk gently in a circular motion until smooth and shiny. If any lumps remain, reheat the bowl over a pan of simmering water for 10 seconds, whisking constantly.
• Finish and serve — Set the ganache aside to thicken at room temperature for 15 to 20 minutes, stirring occasionally, until it reaches a pourable but not runny consistency. Pour it over the cooled cake, letting it drip down the sides. Spread evenly with an offset spatula. Let the ganache set at room temperature for 15 minutes before slicing and serving.

Expert Tips for a Standout Hershey Bar Cake

• Chop the chocolate finely — Small, uniform pieces melt faster and more evenly, whether you are working on the batter chocolate or the ganache. A serrated knife works well for cutting chocolate bars.
• Room temperature ingredients matter here — Cold egg or milk can cause the melted chocolate to firm up into streaks rather than blending smoothly into the batter. Set everything out 30 minutes ahead.
• Do not overmix the batter — Stir just until the flour disappears, then fold in the melted chocolate. Overmixing develops gluten, which makes the cake dense and rubbery instead of tender.
• Test for doneness with a toothpick — A few moist crumbs clinging to the toothpick is perfect. If it comes out clean and dry, the cake is overbaked. If it is wet with batter, give it another 2 to 3 minutes.
• Let the ganache rest at the right consistency — Pourable but not runny means it should flow slowly from a spoon, coating the back of the spoon in a thick layer. If it is too thin, wait a few more minutes. If it is too thick, reheat gently over simmering water for 5 seconds.
• Use a gentle hand with the offset spatula — Once you pour the ganache, let gravity help it drip down the sides. Lightly guide it with the spatula instead of aggressively spreading it — that keeps the drips looking natural.
• Slice with a hot, dry knife — Dip a sharp knife in hot water, wipe it dry, then slice. Repeat between each cut for clean, ganache-smeared slices instead of torn ones.

Common Mistakes to Avoid

• Overheating the chocolate — Chocolate seized from too much heat turns grainy and stiff. If this happens, you cannot fix it. Melt in short bursts and stir between each one.
• Skipping the parchment round — Even a well-greased pan can hold onto a cake this moist. The parchment guarantees clean release every time.
• Rushing the cooling process — Turning the cake out while it is still warm can cause it to crack or stick. The 10-minute rest in the pan is non-negotiable, and the cake needs the full hour on the rack before ganache.
• Boiling the cream — Vigorously boiling cream can curdle or create a grainy ganache. Heat it just until small bubbles form around the edge of the saucepan — that is the sweet spot.
• Pouring ganache too early — Warm, runny ganache will slide right off the cake and pool on the plate. Wait until it thickens to a pourable consistency, about 15 minutes at room temperature.
• Using stale or old baking soda — Baking soda loses its potency over time, and a weak leavener will leave you with a flat, dense cake. Replace opened baking soda every 6 months for best results.

Variations & Ways to Customize Hershey Bar Cake

• Add a pinch of espresso powder — Stir 1/4 teaspoon into the dry ingredients. It does not add coffee flavor but deepens the chocolate taste noticeably.
• Swap in dark chocolate bars — Use 2 ounces of dark chocolate (60-70% cacao) in the batter and 3 ounces in the ganache for a less sweet, more intense cake.
• Top with flaky sea salt — Sprinkle a pinch of Maldon or similar flaky salt over the ganache right after pouring. The salty crunch balances the sweetness perfectly.
• Make it a layer cake — Double the recipe and bake in two 6-inch pans. Fill the center with extra ganache or whipped cream for a mini celebration cake.
• Add a touch of almond extract — Replace the vanilla extract with 1/4 teaspoon of almond extract. It adds a subtle nutty note that pairs beautifully with milk chocolate.
• Fold in toasted nuts — Stir 1/4 cup of finely chopped toasted pecans or hazelnuts into the batter before baking for texture and crunch.

What to Serve With Hershey Bar Cake

A slice of this cake is plenty satisfying on its own, but a simple accompaniment can turn it into a full dessert experience. Here are a few pairings that work well without stealing the spotlight.

• Vanilla ice cream — The cold, creamy vanilla cuts through the rich chocolate and adds temperature contrast.
• Fresh berries — Raspberries or sliced strawberries provide tartness that balances the sweetness of the milk chocolate.
• Whipped cream — A dollop of lightly sweetened whipped cream adds airiness and a silky finish.
• Hot coffee or espresso — Coffee’s bitterness is a classic partner for chocolate, and it also complements the cake’s creamy ganache.
• Crème anglaise — A thin, pourable vanilla custard creates an elegant presentation and adds moisture to each bite.
• Caramel sauce — A drizzle of salted caramel over the top plays well with the milk chocolate’s caramel-like sweetness.

Make-Ahead Instructions

• Bake the cake layers in advance — Cool the cake completely, wrap it tightly in plastic wrap, and store at room temperature for up to 2 days before adding the ganache.
• Make the ganache a day ahead — Prepare the ganache, let it set at room temperature, then cover and refrigerate. Reheat gently over simmering water or in 10-second microwave bursts before pouring.
• Freeze the cake without ganache — Wrap the cooled, unglazed cake in plastic wrap, then foil, and freeze for up to 3 months. Thaw overnight in the refrigerator before glazing.
• Assemble the whole cake 6 hours ahead — Pour the ganache, let it set at room temperature, then loosely cover the cake with a cake dome and keep it at room temperature until serving.

Storage and Reheating

Storage

• Room temperature — Store the glazed cake covered with a cake dome or upside-down bowl for up to 3 days. The ganache stays glossy and the cake stays moist.
• Refrigerator — For longer storage, refrigerate the cake tightly covered for up to 5 days. Let it sit at room temperature for 30 minutes before serving to soften the ganache.
• Freezer (without ganache) — Wrap the cooled, unglazed cake in plastic wrap, then heavy-duty foil, and freeze for up to 3 months. Thaw in the refrigerator overnight before glazing.

Reheating

• Microwave — Warm a single slice on a microwave-safe plate for 10 to 15 seconds. The cake softens without melting the ganache into a puddle.
• Oven — Place individual slices on a baking sheet in a 300°F (149°C) oven for 5 minutes. This method keeps the ganache intact better than the microwave.
• Air fryer — Heat a slice at 300°F for about 3 minutes. Check it at 2 minutes to avoid drying out the cake.
• No reheating needed — This cake tastes excellent at room temperature. If you prefer a firmer ganache, skip reheating altogether and let the slice sit out for 10 minutes after removing from the fridge.

Nutritional Breakdown (Per Serving)

Based on 1 serving = 1 slice out of 4 total.

• Calories: 577
• Protein: 6g
• Fat: 36g
• Carbohydrates: 60g
• Fiber: 1g
• Sugar: about 46g
• Sodium: around 150mg

Frequently Asked Questions

Can I freeze Hershey Bar Cake with the ganache?

I do not recommend freezing the cake after the ganache is poured. The ganache can separate or develop a grainy texture when thawed. Freeze the unglazed cake instead, then make fresh ganache when you are ready to serve.

Can I use a different chocolate bar for this recipe?

Yes, but the flavor and sweetness will shift. Use another high-quality milk chocolate bar for a similar result. Dark chocolate (60-70% cacao) works well if you prefer a less sweet cake, but you may want to add a tablespoon more sugar to the batter.

Why did my cake stick to the pan?

Two reasons: you either skipped the parchment round or did not let the cake cool the full 10 minutes in the pan. The parchment creates a guaranteed non-stick surface, and the 10-minute rest allows the cake to firm up enough to release cleanly.

How long does Hershey Bar Cake last in the fridge?

Covered tightly, the glazed cake keeps in the refrigerator for up to 5 days. Let it sit at room temperature for about 30 minutes before slicing so the ganache softens back to a creamy texture.

Can I double this recipe for a larger cake?

Yes, double all the ingredients and bake in a 9-inch round pan. Start checking for doneness around 35 minutes. The baking time will increase by about 5 to 10 minutes, so keep a close eye on it.

What if I do not have a 6-inch cake pan?

A 6-inch pan is the correct size for this recipe, but you can bake the batter in a standard 8×4-inch loaf pan. The cake will be slightly shorter and may need 5 to 10 extra minutes in the oven. Test with a toothpick for doneness.

Final Words

This Hershey Bar Cake hits that sweet spot between everyday dessert and something worth celebrating. The melted chocolate bars create a depth of flavor that reminds you why real chocolate is worth the extra step. Try it for your next small gathering, or just because Tuesday needs a good slice of cake.

Similar Recipes

• One Minute Cookies
• Mrs Fields Pecan Pie Brownies
• Honey Roasted Carrots

Print