Double Chocolate Loaf Cake
Indulging in a rich, moist slice of Double Chocolate Loaf Cake is an experience that transcends the ordinary. This cake is a dream come true for chocolate lovers, merging deep cocoa flavors with chunks of high-quality dark chocolate. Whether it’s for a special occasion or a simple afternoon treat, this loaf cake is sure to impress. The combination of dark brown sugar and cocoa powder creates a luscious, fudgy texture, while the addition of buttermilk ensures that every bite is moist and delicious. So, roll up your sleeves and let’s dive into this decadent recipe!
Why Double Chocolate Loaf Cake is Worth Your Time
Double Chocolate Loaf Cake is not just another dessert; it’s a celebration of chocolate in its purest form. The deep flavors of cocoa and the rich melt-in-your-mouth chocolate chunks make it a cake that’s perfect for any chocolate enthusiast. Plus, the loaf shape makes it easy to slice and serve, making it an ideal choice for gatherings, brunches, or simply to enjoy at home with a cup of coffee. The best part? It’s relatively easy to prepare, and the results are stunningly delicious.
What You’ll Gather
- 3/4 cup firmly packed dark brown sugar – Adds moisture and a deep caramel flavor.
- 1 cup dark unsweetened cocoa powder, sifted – The star ingredient that gives this cake its rich chocolate taste.
- 1 1/2 cups all-purpose flour – Provides structure to the cake.
- 3/4 cup granulated sugar – Balances the flavors and enhances sweetness.
- 1 1/2 teaspoons baking soda – Helps the cake rise and become fluffy.
- 3/4 teaspoon baking powder – Works with baking soda for a perfect lift.
- 1 teaspoon salt – Enhances the overall flavor of the cake.
- 2 large eggs – Adds richness and binds the ingredients together.
- 1 large egg yolk – Provides extra moisture and richness.
- 3/4 cup buttermilk – Adds moisture and a slight tang that complements the chocolate.
- 1/2 cup vegetable oil – Ensures a moist texture.
- 1 teaspoon pure vanilla extract – Enhances the chocolate flavor.
- 8 ounces good-quality dark chocolate (60-72%), coarsely chopped – The luscious chocolate chunks that create pockets of melted chocolate in every slice.
- Whipped cream and strawberries for serving – Optional, but they add a beautiful touch to your presentation.
Gear Checklist
- Mixing bowls – For combining dry and wet ingredients.
- Measuring cups and spoons – To ensure accuracy in your measurements.
- Whisk – For mixing the batter thoroughly.
- Rubber spatula – To gently fold in the chocolate chunks.
- Loaf pan – Essential for baking the cake to perfection.
- Parchment paper – Optional, but helps with easy removal of the cake.
- Cooling rack – To cool the cake evenly after baking.
From Start to Finish: Double Chocolate Loaf Cake

Step 1: Preheat Your Oven
Preheat your oven to 350°F (175°C). This initial step is crucial for ensuring the cake bakes evenly.
Step 2: Prepare Your Loaf Pan
Grease a 9×5-inch loaf pan with vegetable oil or butter. For easy removal, consider lining the bottom with parchment paper.
Step 3: Mix the Dry Ingredients
In a large mixing bowl, whisk together the all-purpose flour, dark cocoa powder, both sugars, baking soda, baking powder, and salt until well combined.
Step 4: Combine the Wet Ingredients
In another bowl, beat together the eggs, egg yolk, buttermilk, vegetable oil, and vanilla extract until smooth and creamy.
Step 5: Combine Dry and Wet Mixtures
Pour the wet ingredients into the bowl with the dry ingredients. Gently mix with a whisk until just combined. It’s okay if a few lumps remain; over-mixing can lead to a dense cake.
Step 6: Fold in the Chocolate
Add the coarsely chopped dark chocolate to the batter. Using a rubber spatula, gently fold the chocolate into the batter, ensuring even distribution.
Step 7: Pour and Bake
Pour the batter into the prepared loaf pan, smoothing the top with a spatula. Bake for 55 to 65 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs.
Step 8: Cool the Cake
Once baked, remove the loaf from the oven and let it cool in the pan for about 10 minutes. Then, transfer it to a cooling rack to cool completely.
Step 9: Serve and Enjoy
Slice the loaf cake and serve it warm or at room temperature. For an extra indulgent touch, top with whipped cream and fresh strawberries.
Dietary Customizations

- Gluten-Free: Substitute all-purpose flour with a gluten-free flour blend.
- Dairy-Free: Use almond milk or soy milk mixed with a teaspoon of vinegar instead of buttermilk.
- Vegan: Replace eggs with flax eggs (1 tablespoon ground flaxseed mixed with 2.5 tablespoons water for each egg), use plant-based milk, and substitute vegetable oil with coconut oil.
Frequent Missteps to Avoid
- Over-mixing the batter can lead to a tough cake. Mix until just combined.
- Not measuring ingredients accurately can affect the texture and taste. Use measuring cups and spoons for precision.
- Allowing the cake to cool in the pan for too long can lead to sogginess. Transfer to a cooling rack after 10 minutes.
- Using low-quality chocolate can result in a less flavorful cake. Invest in good-quality dark chocolate for the best results.
Store, Freeze & Reheat
The Double Chocolate Loaf Cake can be stored at room temperature in an airtight container for up to three days. For longer storage, wrap it tightly in plastic wrap and aluminum foil, then freeze for up to three months. To reheat, simply thaw at room temperature and warm slices in the microwave for about 10-15 seconds, or enjoy it at room temperature.
Popular Questions
Can I use milk instead of buttermilk?
Yes, you can use milk, but for the best results, add a tablespoon of vinegar or lemon juice to the milk and let it sit for about 5 minutes to mimic the acidity of buttermilk.
How do I know when the cake is done baking?
Insert a toothpick into the center of the cake; it should come out with a few moist crumbs. If it comes out wet with batter, it needs more time in the oven.
Can I add nuts or other mix-ins to the cake?
Absolutely! Chopped walnuts or pecans can add a nice crunch. Just be sure to adjust the baking time slightly if you add a significant amount of additional ingredients.
What’s the best way to slice the loaf cake?
Use a sharp serrated knife to slice the loaf cake. This will help you achieve clean, even slices without squishing the cake.
More Recipes You’ll Love
- Chocolate Chip Cookies – A classic favorite that never disappoints!
- Red Velvet Cake – A showstopper for any celebration.
- Banana Bread – Moist and delicious, perfect for breakfast or a snack.
- Zucchini Bread – A delightful way to sneak in some veggies!
That’s a Wrap
There you have it! A luscious, decadent Double Chocolate Loaf Cake that’s sure to satisfy your chocolate cravings. With its rich flavors and moist texture, this cake is perfect for any occasion or simply as a treat for yourself. So gather your ingredients, follow the steps, and indulge in a slice (or two) of chocolate heaven. Happy baking!

Double Chocolate Loaf Cake
Ingredients
- 3/4 cup dark brown sugar firmly packed
- 1 cup dark unsweetened cocoa powder sifted
- 1 1/2 cups all-purpose flour
- 3/4 cup granulated sugar
- 1 1/2 teaspoons baking soda
- 3/4 teaspoon baking powder
- 1 teaspoon salt
- 2 large eggs
- 1 large egg yolk
- 3/4 cup buttermilk
- 1/2 cup vegetable oil
- 1 teaspoon pure vanilla extract
- 8 ounces good-quality dark chocolate 60-72%, coarsely chopped
- Whipped cream and strawberries for serving, optional
Instructions
- Preheat your oven to 350°F (175°C). This initial step is crucial for ensuring the cake bakes evenly.
- Grease a 9x5-inch loaf pan with vegetable oil or butter. For easy removal, consider lining the bottom with parchment paper.
- In a large mixing bowl, whisk together the all-purpose flour, dark cocoa powder, both sugars, baking soda, baking powder, and salt until well combined.
- In another bowl, beat together the eggs, egg yolk, buttermilk, vegetable oil, and vanilla extract until smooth and creamy.
- Pour the wet ingredients into the bowl with the dry ingredients. Gently mix with a whisk until just combined. It’s okay if a few lumps remain; over-mixing can lead to a dense cake.
- Add the coarsely chopped dark chocolate to the batter. Using a rubber spatula, gently fold the chocolate into the batter, ensuring even distribution.
- Pour the batter into the prepared loaf pan, smoothing the top with a spatula. Bake for 55 to 65 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs.
- Once baked, remove the loaf from the oven and let it cool in the pan for about 10 minutes. Then, transfer it to a cooling rack to cool completely.
- Slice the loaf cake and serve it warm or at room temperature. For an extra indulgent touch, top with whipped cream and fresh strawberries.
Equipment
- Mixing Bowls
- Measuring Cups and Spoons
- Whisk
- Rubber spatula
- Loaf Pan
- Parchment Paper
- Cooling Rack
Notes
- Use good-quality dark chocolate for the best flavor and texture.
- Do not over-mix the batter to keep the cake light and moist.
- Store the cake in an airtight container at room temperature for up to three days or freeze for longer storage.
- Line the loaf pan with parchment paper for easy removal of the cake.
- For dairy-free or vegan versions, substitute ingredients as suggested in the dietary customizations.

