This 6-inch Single Layer Chocolate Cake is tender, moist, and perfectly chocolatey — ideal for savoring alone or sharing with someone special. Finish it with a light dusting of powdered sugar or spread on the small-batch milk chocolate frosting and top with a handful of rainbow jimmies. And yes — don’t forget a tall glass of milk.
Table of Contents
- Why You’ll Love this Recipe
- Ingredients Needed
- How to Make This Recipe
- Can I Make this Recipe in Advance?
- How to Freeze a Single Layer Cake (Unfrosted)
- Can I Freeze Frosted Cake Slices?
- Recommended Baking Tools
- More Small Batch Desserts to Enjoy!
- Single Layer Chocolate Cake Recipe
Why You’ll Love this Recipe
- Single 6-inch layer — small batch, less fuss
- Soft, moist texture in every bite
- Deep chocolate flavor, easily amplified with optional ingredients
- Simple to prepare with basic pantry staples
- Perfect for a low-key celebration, a cozy dessert for two, or an everyday treat
- Pairs well with a small batch milk chocolate frosting or a dusting of powdered sugar
- Customizable with sprinkles for a festive look
If you love chocolate cake but don’t want to bake a large multi-layered cake, this single-layer 6-inch cake is a great solution. Adapted from a small-batch cupcake base, the recipe is straightforward and delivers reliable results.
Ingredients Needed
These ingredients are common pantry items — check your kitchen before shopping.
- All-purpose flour — any brand will work.
- Granulated sugar and light brown sugar (lightly packed).
- Unsweetened cocoa powder — standard cocoa like Hershey’s works well.
- Baking powder and baking soda — ensure they are fresh.
- Salt — a pinch.
- One large egg — room temperature is best.
- Milk — 1% was used, but 2% or whole will work; non-dairy milks were not tested.
- Vegetable oil — adds moisture.
- Vanilla extract.
- Hot water — hot to the touch but not boiling (used to bloom cocoa/espresso).
Optional Ingredients
Optional additions enhance depth and presentation.
- Dark chocolate (a small amount melted) for richer chocolate flavor.
- Espresso powder dissolved in hot water to boost chocolate notes; instant coffee can substitute.
- Rainbow jimmies or sprinkles to garnish the frosted cake.
How to Make This Recipe
No mixers required for the cake batter. Whisks, mixing bowls, and a spatula are sufficient. For the milk chocolate frosting, a hand or stand mixer makes the job easier.
Prepare the pan. Grease and flour a 6-inch cake pan or spray with a flour-based baking spray, and optionally place a parchment circle in the bottom for easy release.
Don’t overmix. Combine dry and wet ingredients until just blended — stop when you no longer see streaks. Overmixing can make the cake tough.
Adding the optional ingredients. If using melted dark chocolate or espresso powder, fold them into the wet ingredients. Melted chocolate may slightly affect the cake’s rising or cause a shallow sink in the center — this won’t impact flavor.
Check doneness with a toothpick: if it comes out clean from the center, the cake is done.
Use cake strips around the pan if you want a flatter top; they help the cake bake evenly.
Cooling. Cool the cake in the pan for about 10 minutes, then invert it onto a wire rack to cool completely. If frosting the same day, make sure the cake is fully cooled to avoid melting the frosting.
Keep it simple. If frosting feels like too much, a dusting of powdered sugar is a quick, elegant finish that still satisfies chocolate cravings.
Can I Make this Recipe in Advance?
Yes. The baked, unfrosted 6-inch cake freezes well for up to 2 months when tightly wrapped. The milk chocolate frosting can be made and refrigerated for 2–3 days in an airtight container; bring it back to room temperature and re-whip briefly before spreading.
How to Freeze a Single Layer Cake (Unfrosted)
Freezing is simple:
- Cool the cake completely.
- Wrap tightly in 2–3 layers of plastic wrap.
- Place the wrapped cake in a freezer storage bag and lay it flat in the freezer.
- Label with the date so you know how long it has been stored.
To defrost, move the cake to the refrigerator 2–3 hours before frosting; keeping it slightly chilled reduces crumbs while you decorate.
Can I Freeze Frosted Cake Slices?
Yes. Wrap each frosted slice tightly in 2–3 layers of plastic wrap, then one layer of aluminum foil. Label and freeze on a flat surface. Slices keep for up to 2 months. Defrost on the counter or in the refrigerator before serving.
Recommended Baking Tools
Helpful tools to streamline baking this small cake:
- 6-inch cake pan — a small pan gives great single-layer results.
- Mixing bowls for dry and wet ingredients.
- Microwave-safe measuring cup for melting chocolate.
- Whisks and spatulas for gentle mixing and scraping.
More Small Batch Desserts to Enjoy!
Chocolate Brownie Ice Cream
Mini Strawberry Sheet Cake
Individual No-Bake Strawberry Cheesecakes
Small Lemon Cream Cheese Pound Cake
Single Layer Chocolate Cake
Ingredients
6 inch single layer chocolate cake
- 1/2 cup All-Purpose Flour
- 1/4 cup Granulated Sugar
- 1/4 cup Light Brown Sugar, lightly packed
- 1/4 cup Unsweetened Cocoa Powder
- 1/2 tsp Baking Powder
- 1/2 tsp Baking Soda
- 1/8 tsp Salt
- 1 Large Egg
- 1/4 cup Milk
- 2 tbsp Vegetable Oil
- 1/2 tsp Vanilla Extract
- 2 tbsp Hot Water
- 1 oz Dark Chocolate (optional), melted
- 1/2 tsp Espresso Powder (optional), dissolve in the hot water
- 1/2 cup Rainbow Jimmies (optional), for garnish
small batch milk chocolate frosting
- 2.5 oz Milk Chocolate Chips
- 6 tbsp Unsalted Butter, room temperature
- 1/3 cup Sifted Powdered Sugar
- 1/4 cup Unsweetened Cocoa Powder
- 1/8 tsp Salt
- 2 tbsp Light Corn Syrup
- 1 tsp Vanilla Extract
Instructions
6 inch single layer chocolate cake
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Preheat oven to 350ºF and position the rack just above center. Grease and flour a 6-inch cake pan and optionally line the bottom with parchment. Set aside.
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If using dark chocolate, melt it in a microwave-safe bowl in 30–45 second bursts until smooth, then let cool slightly.
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In a bowl, whisk together flour, granulated sugar, light brown sugar, cocoa powder, baking powder, baking soda, and salt.
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In another bowl, whisk the egg, milk, vegetable oil, vanilla, and hot water with dissolved espresso powder (if using).
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Stir in the melted chocolate (if using), then add the dry ingredients to the wet and whisk until just combined.
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Pour batter into the prepared pan and bake 25–28 minutes, or until a toothpick inserted in the center comes out clean.
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Cool in the pan for 10 minutes, then invert onto a wire rack to cool completely.
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When cooled, dust with powdered sugar or frost with the milk chocolate frosting and finish with rainbow jimmies if desired. Serve and enjoy.
small batch milk chocolate frosting (optional)
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Melt the milk chocolate in a microwave-safe bowl in 30–45 second bursts until smooth; let cool slightly.
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Using a hand or stand mixer with the paddle attachment, beat butter, sifted powdered sugar, cocoa powder, and salt on medium until combined, scraping the bowl as needed.
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Add light corn syrup, vanilla, and melted chocolate; mix until smooth and glossy. Frost the cooled cake.
Video
Notes
- Recipe adapted from small-batch chocolate cupcakes; frosting adapted from a chocolate zucchini cake frosting.
- Store a frosted cake in the refrigerator wrapped in plastic wrap for up to 3 days.
Nutrition
Nutritional information is an estimate and will vary based on ingredients used.
