Chocolate Loaf Cake

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I love this chocolate loaf cake for its soft, moist crumb and glossy ganache top. It's a one-bowl batter made with cocoa, sour cream, warm coffee, and dark chocolate chips, with just 15 minutes of hands-on prep.

Double Chocolate Loaf Cake: A Chocolate Lover's Quick Bread

I have a real soft spot for loaf cakes (proof: my cherry loaf cake, raspberry peach loaf, and pumpkin cream cheese bread). They slice neatly and travel well. Loaf desserts make perfect little treats for the holidays or any special occasion, birthdays, parties, potlucks, and even game nights!

This chocolate loaf cake is all about the chocolate. The batter gets cocoa powder and dark chocolate chips. More chips go on top straight out of the oven, and then a silky dark chocolate ganache goes over everything. Technically, that makes it triple chocolate. I figured "double" was already a big enough promise. It's a simple loaf that still looks striking, and it feels indulgent without being heavy.

The texture sits somewhere between a moist chocolate cake and a chocolate quick bread. Sour cream and light brown sugar keep the crumb soft and tender, the same pairing that makes my carrot cake loaf so moist. Warm coffee makes the cocoa taste richer and more chocolatey, and no, the cake doesn't taste like coffee. If you've made my chocolate tres leches cake, you already know I rarely skip coffee in a chocolate batter.

The other trick is the oven. The loaf starts at a higher temperature for 10 minutes, then finishes at a lower one. That early burst of heat gets the batter rising fast, just like the method I use for my pumpkin chocolate chip muffins. The lower heat then bakes the center through without drying out the edges.

Best Pan for a Chocolate Loaf Cake

This recipe is made for a 2 lb loaf pan, which is the standard 9x5-inch loaf pan (about 8 cups). I don't recommend the smaller 8½ x 4½-inch pan (about 6 cups) here. The batter would sit too close to the rim and could spill over as it rises.

I line my pan with parchment paper and leave an overhang on the long sides. The batter is quite loose, so those paper handles make it easy to lift the loaf out in one piece.

The Chocolate Loaf Ingredients

Note: I've included many helpful tips below, before the recipe card, to help you make this Chocolate Loaf Cake successfully on the first try, and I encourage you to read them all. But if you'd rather get straight to ingredient amounts + recipe instructions, feel free to jump to the fully printable recipe card and come back to the tips later, if you need to!

• All-purpose flour: I spoon and level it for an accurate measurement. Before sifting, I set aside 1 tablespoon to toss with the chocolate chips (more on that below).
• Cocoa powder: I used unsweetened cocoa powder. Natural or Dutch-processed both work here. Dutch-processed gives you a darker, richer-looking loaf.
• Baking soda and baking powder: Bicarbonate of soda is simply baking soda. I use both so the loaf rises nicely even with all those chocolate chips. Make sure both are fresh.
• Light brown sugar: I pack it into the cup. It adds a soft caramel flavor and extra moisture. Dark brown sugar works too and makes the loaf a touch richer.
• Egg: Just one large egg. I let it come to room temperature so it mixes smoothly into the batter.
• Vegetable oil: I use oil instead of butter because it keeps the loaf moist for days. Canola or any neutral oil is a good swap.
• Sour cream: Full-fat sour cream gives the crumb its soft, tender texture. Plain full-fat Greek yogurt is the best substitute.
• Coffee: I pour in ⅓ cup of freshly brewed coffee while it's still warm. It helps dissolve the cocoa and sugar into a smooth batter. No coffee? Use hot water with ½ teaspoon instant espresso powder, or plain hot water.
• Dark chocolate chips: I use 1¼ cups total, split into two amounts. ¾ cup goes into the batter, and ½ cup goes on top right after baking. Semi-sweet chips work if you like a sweeter loaf.
• This is a one-bowl batter. There's no butter to cream and no second bowl for the wet ingredients.

The Chocolate Ganache Ingredients

This is a pourable ganache, so it drips down the sides instead of sitting on top like a thick frosting. Think of it as the dark chocolate version of the ganache on my no-bake white chocolate cheesecake.

• Dark chocolate (60 to 70%): I use a good-quality bar and chop it finely so it melts evenly. Chocolate chips contain stabilizers, so they won't melt as smoothly or look as glossy.
• Heavy cream: Heavy cream or heavy whipping cream both work. I keep an extra tablespoon warm in case the ganache needs loosening.
• Light corn syrup: One tablespoon gives the ganache a beautiful shine and keeps it soft as it sets. Golden syrup is a great swap. Honey works in a pinch, but you may taste it.
• Salt: Just a pinch to sharpen the chocolate flavor.
• Unsalted butter (optional): A teaspoon stirred in at the end adds extra gloss and a silky finish.

Ganache Tips

For the ganache, keep the heat low and take your time. Stirring slowly helps create a smooth, glossy finish. If it thickens too much before pouring, you can loosen it with a little warm cream. If it looks slightly oily, a teaspoon of warm water or milk will bring it back together.

For the best finish, always pour the ganache over a completely cooled cake. Let it flow gently over the top rather than spreading it, this gives you that smooth, glossy look.

The Batter Will Look Runny (and That's Okay!)

• Expect a loose batter. This is a very high-moisture chocolate loaf, so the batter will look much looser than a typical cake batter. That's exactly what you want here.
• Don't worry when you pour it. It may feel too runny when you pour it into the pan, but this is what gives the finished cake its soft, rich texture.
• Oil, sour cream, and coffee keep it moist. Together, they make a cake that stays moist for days and has a soft, tender crumb.
• Don't add extra flour. Resist the urge to add more flour to "thicken" the batter. It will bake up beautifully as it is, I promise.

My Testing Notes

After testing this recipe several times, I made a few adjustments, including a small increase in flour and a slight reduction in coffee. This final version has an improved structure and prevents the cake from collapsing as it cools. Without this adjustment, the cake may rise well in the oven but sink slightly afterward due to the high moisture content. The goal here is to support the rise without compromising that soft, almost fudgy interior.

Does the Loaf Taste Like Coffee?

The coffee itself doesn't make the cake taste like coffee. It simply deepens the chocolate flavor and makes it taste richer. If you prefer not to use it, you can swap it for hot water. The cake will still work perfectly, just with a slightly lighter chocolate flavor.

My Top 5 Baking Tips

• Tossing the chocolate chips in a little flour before adding them to the batter is a small step, but it makes a noticeable difference. Without it, the chips tend to sink to the bottom of the loaf, creating a slightly dense layer. Coating them lightly helps keep them evenly distributed throughout the cake..
• Start with a hotter oven. The higher starting temperature gives this loaf its lift. It helps the cake rise quickly and form a slight dome before it sets. Once you lower the temperature, the cake finishes baking evenly without drying out.
• Check the cake, not just the clock. I recommend you rely more on how the cake looks and feels than on the exact minutes. The top should be set and gently domed, and the center should spring back when you press it lightly.
• Do the toothpick test. A toothpick should come out with moist crumbs, but not wet batter. If the center is slightly underbaked, the bottom of the cake can feel a little too soft once it cools.
• Let it rest in the oven. After baking, I turn off the oven and leave the cake inside for a few minutes with the door slightly open. This helps it cool more slowly, so it's less likely to shrink after it comes out.

How to Make Chocolate Loaf Cake

This is a recipe overview. Scroll up to find the complete instructions + ingredient amounts in the recipe card above.

• Prep the pan: Preheat the oven to 375°F (190°C). Line a 2 lb loaf pan with parchment paper, leaving an overhang.
• Mix the dry ingredients: Set aside 1 tablespoon of the flour. Sift the rest with the cocoa, baking powder, baking soda, and salt. Whisk in the brown sugar until the color is even, then make a well in the center.

• Make the batter: Add the egg, oil, sour cream, and warm coffee to the well. Beat for 1 to 2 minutes until smooth.

• Fold in the chips: Toss ¾ cup chocolate chips with the reserved flour and fold them in. The flour coating helps keep them from sinking.

• Fill the pan: Pour in the batter and tap the pan once on the counter. The batter is loose, and that's completely normal.
• Bake: Bake for 10 minutes at 375°F (190°C). Lower the heat to 350°F (175°C) and bake for another 38 to 42 minutes. Keep the oven door closed for the first 40 minutes.
• Cool: Turn off the oven, crack the door, and let the loaf rest inside for 5 minutes. Scatter the remaining chips on top. Cool in the pan for 15 to 20 minutes, then move it to a wire rack to cool completely.

• Make the ganache: Warm the cream, corn syrup, and salt until just steaming. Add the chopped chocolate, wait 30 seconds, and stir over very low heat until smooth and glossy. Stir in the butter.
• Pour: Let the ganache cool for 5 to 10 minutes. Pour it in a line down the center of the loaf and let it run over the sides on its own. Add a few extra chips if you like, then let it set before slicing.

And that's it! Time to slice. Serve thick slices on their own, with a scoop of vanilla ice cream, or with lightly whipped cream and fresh raspberries. It's a lovely afternoon treat with coffee, and it holds up well for parties, potlucks, and holiday dessert tables.

Putting together a bigger dessert spread? Serve it next to my Black Forest cheesecake, cherry cheesecake brownies, or a pan of classic blondies. For a fall baking session, bake it alongside my baked pumpkin donuts with maple glaze. Happy baking! Julia. ❤️

FAQs

1. Why is my batter so thin? It's supposed to be! The warm coffee and sour cream make a loose batter, and that's what gives this loaf its moist, tender crumb. Don't add extra flour.
2. Can I make this without coffee? Yes. Swap in the same amount of hot water or warm milk. Coffee gives the deepest chocolate flavor, but the loaf is still delicious without it.
3. Why did my chocolate chips sink to the bottom? Tossing the chips in flour helps them stay suspended in the batter. I use the same trick for the berries in my raspberry lemon loaf. Mini chips also sink less than regular chips or large chunks.
4. Why did my loaf sink in the middle? Usually the oven door was opened too early, or the loaf came out before the center was baked through. Wait at least 40 minutes before checking, and use a skewer to test the center. An oven thermometer is also helpful, since many ovens run hot or cold.
5. My ganache is too thick or looks greasy. What should I do? If it's too thick, stir in 1 tablespoon of warm cream. If it looks slightly greasy or split, add 1 teaspoon of warm water or milk and stir gently until it comes back together.
6. Can I make this ahead? Absolutely. Bake the loaf a day ahead, wrap it well once cool, and add the ganache on the day you serve it. It's a great make-ahead option for a dessert table next to a classic New York-style cheesecake.

More Chocolate Desserts

• Black Forest Cheesecake
• Cherry Cheesecake Brownies
• Raspberry Brownies
• Chocolate Tres Leches Cake
• Chocolate Cherry Cake
• No-Bake White Chocolate Cheesecake
• Pumpkin Chocolate Chip Muffins