Who can resist a soft, fluffy chocolate cupcake topped with a rich and creamy fudge frosting? If you’re craving something sweet that will impress at any gathering or simply satisfy your chocolate cravings, then these chocolate cupcakes with fudge frosting are the perfect choice. Whether it’s a birthday party, a holiday celebration, or just a cozy weekend at home, these cupcakes are sure to bring joy with every bite. Let’s dive into this delicious recipe that will make you the star of any dessert table!
Why This Recipe is a Keeper

These chocolate cupcakes are incredibly moist and decadent, thanks to the blend of ingredients that work perfectly together. The addition of sour cream adds an extra layer of richness, while the melted chocolate intensifies the cocoa flavor. Topped with a luscious fudge frosting, each bite is a delightful experience that combines texture and taste beautifully. Not only are they easy to make, but they also stay fresh for days, making them a great make-ahead treat.
What’s in the Bowl

To create these irresistible chocolate cupcakes with fudge frosting, you’ll need the following ingredients:
- 2 cups cake flour (270 grams, sifted; see note)
- 2 teaspoons baking soda (12 grams)
- 1 teaspoon kosher salt (3 grams)
- 1 cup unsalted butter (113 grams, room temperature, or 1 stick)
- 2 cups brown sugar (533 grams)
- 3 large eggs (150 grams, room temperature and lightly beaten)
- 1 teaspoon pure vanilla extract (6 grams)
- 1 ounce unsweetened chocolate (28 grams, melted)
- 1 cup sour cream (227 grams, room temperature)
- 1 cup water (227 grams, hot, around 200°F)
- 4 cups Chocolate Fudge Frosting (click for recipe)
- Sprinkles (optional, for decorating)
Hardware & Gadgets

Before you start baking, make sure you have the following kitchen essentials on hand:
- Muffin tin – This will hold your cupcakes as they bake.
- Paper liners – To prevent sticking and make cleanup a breeze.
- Mixing bowls – For combining ingredients easily.
- Whisk – To mix dry ingredients and incorporate air.
- Rubber spatula – Perfect for folding in wet ingredients.
- Cooling rack – To let your cupcakes cool evenly.
- Offset spatula – Ideal for spreading frosting smoothly.
Cooking Chocolate Cupcakes with Fudge Frosting: The Process
Baking these chocolate cupcakes is a straightforward process that even beginners can master. Follow these steps for perfect results:
Step 1: Preheat and Prepare
Preheat your oven to 350°F (175°C). Line your muffin tin with paper liners and set it aside.
Step 2: Mix Dry Ingredients
In a medium bowl, sift together the cake flour, baking soda, and kosher salt. Set this mixture aside while you prepare the wet ingredients.
Step 3: Cream Butter and Sugar
In a large mixing bowl, beat the room temperature unsalted butter and brown sugar together until light and fluffy. This should take about 2-3 minutes using an electric mixer on medium speed.
Step 4: Add Eggs and Vanilla
Add the lightly beaten eggs and pure vanilla extract to the butter-sugar mixture, mixing until fully combined.
Step 5: Incorporate Chocolate
Melt the unsweetened chocolate in a microwave or double boiler. Allow it to cool slightly, then add it to the batter, mixing until well blended.
Step 6: Combine Dry and Wet Mixtures
Gradually add the dry ingredients into the wet mixture, alternating with the sour cream and hot water. Start with a third of the dry mixture, followed by half of the sour cream, then another third of the dry ingredients, the remaining sour cream, and finish with the last of the dry mixture. Mix until just combined; be careful not to overmix.
Step 7: Fill Muffin Tin
Using a scoop or spoon, fill each cupcake liner about two-thirds full with batter. This allows room for rising without overflowing.
Step 8: Bake
Place the muffin tin in the preheated oven and bake for 18-20 minutes, or until a toothpick inserted into the center comes out clean.
Step 9: Cool the Cupcakes
Once baked, remove the cupcakes from the oven and let them cool in the pan for about 5 minutes. Then, transfer them to a cooling rack to cool completely.
Step 10: Frost the Cupcakes
Once the cupcakes are completely cool, generously frost them with the chocolate fudge frosting. If desired, sprinkle with colorful sprinkles for a festive touch!
Variations for Dietary Needs
If you or your guests have dietary restrictions, consider these variations:
- Gluten-Free: Substitute the cake flour with a gluten-free flour blend.
- Dairy-Free: Use dairy-free butter and a plant-based sour cream alternative.
- Vegan: Replace eggs with flax eggs (1 tablespoon flaxseed meal + 2.5 tablespoons water = 1 egg) and use plant-based butter and sour cream.
- Reduced Sugar: Use a sugar substitute or a blend of natural sweeteners to reduce the overall sugar content.
Flavor Logic
The beauty of these chocolate cupcakes with fudge frosting lies in the balance of flavors:
The rich taste of chocolate is complemented by the sweetness of brown sugar, which provides a deeper flavor profile than regular white sugar. The addition of sour cream not only keeps the cupcakes moist but also adds a subtle tang that enhances the chocolate flavor. The fudge frosting is a chocolate lover’s dream, bringing a velvety texture that contrasts beautifully with the lightness of the cupcake. Sprinkles add a pop of color and a bit of crunch, making each bite a delightful experience.
Cooling, Storing & Rewarming
To maintain the freshness of your chocolate cupcakes with fudge frosting, consider the following tips:
- Cooling: Allow cupcakes to cool completely before frosting to prevent melting.
- Storing: Store in an airtight container at room temperature for up to 3 days, or refrigerate for up to a week.
- Freezing: Unfrosted cupcakes can be frozen for up to 3 months. Thaw at room temperature when ready to use.
- Rewarming: If desired, microwave a cupcake for 10-15 seconds to enjoy a warm treat.
Reader Questions
Can I use regular all-purpose flour instead of cake flour?
Yes, you can use all-purpose flour, but the cupcakes may turn out slightly denser. For best results, stick with cake flour for a lighter texture.
How do I know when my cupcakes are done baking?
The cupcakes are done when a toothpick inserted in the center comes out clean or with a few moist crumbs. Be careful not to overbake, as this can lead to dryness.
Can I make the fudge frosting ahead of time?
Absolutely! The fudge frosting can be made ahead and stored in the refrigerator for up to a week. Just give it a good stir before using it to frost your cupcakes.
What can I do if my cupcakes dome too much while baking?
If your cupcakes dome too much, try reducing the oven temperature by 25°F for the next batch or check your oven’s calibration. Also, avoid overmixing the batter, as this can contribute to a dome shape.
If you loved these chocolate cupcakes with fudge frosting, you might also want to try:
Wrap-Up
These chocolate cupcakes with fudge frosting are not just a dessert; they’re an experience. From the moment the aroma fills your kitchen to the last bite of that rich, chocolatey goodness, it’s a treat that brings smiles. Whether you’re celebrating a special occasion or simply indulging in a sweet craving, these cupcakes are sure to be a hit. So gather your ingredients, preheat your oven, and get ready to bake something truly delightful!

Chocolate Cupcakes with Fudge Frosting
Ingredients
For the Cupcakes:
- 2 cups cake flour (sifted)
- 2 teaspoons baking soda
- 1 teaspoon kosher salt
- 1 cup unsalted butter (room temperature)
- 2 cups brown sugar
- 3 large eggs (lightly beaten, room temperature)
- 1 teaspoon pure vanilla extract
- 1 ounce unsweetened chocolate (melted)
- 1 cup sour cream (room temperature)
- 1 cup water (hot, around 200°F)
- 4 cups Chocolate Fudge Frosting (click for recipe)
- Sprinkles (optional, for decorating)
Instructions
Baking Instructions:
- Preheat your oven to 350°F (175°C). Line your muffin tin with paper liners and set it aside.
- In a medium bowl, sift together the cake flour, baking soda, and kosher salt. Set this mixture aside while you prepare the wet ingredients.
- In a large mixing bowl, beat the room temperature unsalted butter and brown sugar together until light and fluffy, about 2-3 minutes using an electric mixer on medium speed.
- Add the lightly beaten eggs and pure vanilla extract to the butter-sugar mixture, mixing until fully combined.
- Melt the unsweetened chocolate in a microwave or double boiler. Allow it to cool slightly, then add it to the batter, mixing until well blended.
- Gradually add the dry ingredients into the wet mixture, alternating with the sour cream and hot water. Start with a third of the dry mixture, followed by half of the sour cream, then another third of the dry ingredients, the remaining sour cream, and finish with the last of the dry mixture. Mix until just combined; be careful not to overmix.
- Using a scoop or spoon, fill each cupcake liner about two-thirds full with batter.
- Place the muffin tin in the preheated oven and bake for 18-20 minutes, or until a toothpick inserted into the center comes out clean.
- Once baked, remove the cupcakes from the oven and let them cool in the pan for about 5 minutes. Then, transfer them to a cooling rack to cool completely.
- Once the cupcakes are completely cool, generously frost them with the chocolate fudge frosting. If desired, sprinkle with colorful sprinkles for a festive touch!
Equipment
- Muffin Tin
- Paper liners
- Mixing Bowls
- Whisk
- Rubber spatula
- Cooling Rack
- Offset spatula
Notes
- Allow cupcakes to cool completely before frosting to prevent melting.
- Store in an airtight container at room temperature for up to 3 days, or refrigerate for up to a week.
- Unfrosted cupcakes can be frozen for up to 3 months. Thaw at room temperature when ready to use.
