Name: Brownie Cupcake Recipe with Chocolate Buttercream Frosting Recipe
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Cuisine: American
Ingredients: 1 Box Brownie Mix (see notes for details); 1/2 cup (60g) All Purpose Flour; 1/2 cup (100g) Granulated Sugar; 1½ teaspoons (6g) Baking Powder; 2½ Tablespoons (15g) Unsweetened Cocoa Powder; 1 stick unsalted butter, melted (113g / 1/2 cup); 1 cup sour cream (full fat); 1/2 cup hot coffee or hot water (we used instant espresso dissolved in hot water); 3 large eggs; Fudge Packet (if your brownie mix comes with one); 1½ sticks unsalted butter, softened (do not microwave); 2½ cups powdered sugar; ½ cup unsweetened cocoa powder, sifted (35g); 1-2 tablespoons milk (add more as needed to reach desired consistency); 1 teaspoon vanilla extract (4g); 1 teaspoon salt (6g)

Jump to Recipe· 4.2 from 10 reviews

If you love the rich fudginess of brownies and the light, fluffy charm of cupcakes, then this Brownie Cupcake Recipe with Chocolate Buttercream Frosting Recipe is going to become your new obsession. It perfectly marries the dense, chocolate-packed goodness of a brownie with the fun, individual serving size of a cupcake, all topped with the creamiest, most luscious chocolate buttercream frosting you can imagine. Every bite delivers that intense chocolate flavor and a melt-in-your-mouth texture that’s hard to resist. Trust me, once you try these, you’ll find yourself reaching for this recipe again and again.

Ingredients You’ll Need

The image shows six chocolate cupcakes resting on a wire cooling rack. Each cupcake is in a white paper liner, with a dark brown, slightly shiny and textured top that rises evenly with a soft dome shape. The cupcakes have small air bubbles on the surface, giving them a light and fluffy look. The background surface is a white marbled texture. Photo taken with an iphone --ar 4:5 --v 7

These ingredients are straightforward but crucial for creating the perfect balance of texture, flavor, and richness in the brownie cupcakes and their decadent frosting. Each one plays a role in building that luscious chocolaty experience you’ll fall in love with.

Box Brownie Mix: The base that brings instant brownie flavor and convenience to the recipe.
All Purpose Flour: Helps provide structure without making the cupcakes tough.
Granulated Sugar: Balances sweetness and enhances chocolate flavor.
Baking Powder: Adds just enough lift so these brownies are slightly cakey yet still fudgy.
Unsweetened Cocoa Powder: Delivers deep chocolate richness and color.
Unsalted Butter (melted and softened): Adds moisture, richness, and helps create a tender crumb.
Sour Cream: Keeps the cupcakes moist and tender with a subtle tang.
Hot Coffee or Hot Water: Enhances the chocolate flavor depth without overpowering.
Eggs: Bind everything together and help with texture.
Fudge Packet: Optional but highly recommended for adding extra gooey chocolate goodness.
Powdered Sugar: Sweetens and smooths out the frosting.
Vanilla Extract: Brightens the frosting and rounds out the chocolate.
Salt: Balances sweetness and intensifies chocolate flavor.
Milk: Adjusts frosting consistency for easy spreading or piping.

How to Make Brownie Cupcake Recipe with Chocolate Buttercream Frosting Recipe

Step 1: Preheat and Prepare

Start by heating your oven to 350℉ and line a cupcake pan with paper liners. This step ensures your cupcakes come out perfectly shaped and prevents sticking. Remember, this recipe yields about 18 to 20 cupcakes, so be sure to have a big enough pan or two ready.

Step 2: Mix the Dry Ingredients

In a large mixing bowl, whisk together the brownie mix, flour, granulated sugar, cocoa powder, and baking powder. Combining these dry ingredients thoroughly ensures even distribution and a consistent chocolate flavor in every bite.

Step 3: Add Wet Ingredients

Next, stir in the eggs, sour cream, melted butter, hot coffee (or hot water), and the optional fudge packet. Use a rubber spatula to fold everything together gently until just combined. The hot coffee enhances the chocolate notes beautifully, while the sour cream keeps the texture delightfully moist.

Step 4: Fill and Bake

Spoon about 1/4 cup of batter into each cupcake liner. The batter should be thick but spoonable. Bake in the preheated oven for 18 to 20 minutes or until a toothpick inserted in the center comes out clean or with just a few moist crumbs attached. This ensures the cupcakes are baked through but remain fudgy.

Step 5: Cool Completely

Once baked, remove the cupcakes from the pan promptly and let them cool on a wire rack. Cooling is key before frosting, as warm cupcakes can cause the chocolate buttercream frosting to melt and slide off.

Step 6: Make the Chocolate Buttercream Frosting

Start by beating softened butter on low to medium speed until smooth. Add vanilla extract and mix it in well. Gradually add powdered sugar, salt, and sifted cocoa powder. Pour in most of the milk and beat everything thoroughly, starting slow and increasing speed as the mixture comes together. Adjust the frosting consistency by adding more milk one tablespoon at a time if it’s too thick or more powdered sugar if it’s too soft. Beat for 3 to 5 minutes to develop a silky, fluffy texture that’s perfect for piping.

Step 7: Frost the Cupcakes

After the cupcakes have fully cooled, frost them using a piping bag fitted with a star tip for elegant swirls or simply spread with a knife if you prefer a rustic look. To add a bit of extra fun, sprinkle mini chocolate chips or chocolate shavings on top. This finishing touch adds texture and visual appeal.

How to Serve Brownie Cupcake Recipe with Chocolate Buttercream Frosting Recipe

A white square plate holds ten small chocolate cupcakes arranged in two rows. Each cupcake has a dark brown base with a yellow cupcake liner. On top of each cupcake is a thick layer of chocolate frosting, piped in a detailed floral and ruffled pattern that covers the whole top. Some cupcakes are decorated with small chocolate chips placed in the center of the frosting. The plate sits on a white marbled surface with green leaves blurred in the background. Photo taken with an iphone --ar 4:5 --v 7

Garnishes

Consider topping your frosted cupcakes with mini chocolate chips, edible glitter, chopped nuts, or a drizzle of caramel or chocolate sauce. These garnishes can elevate the presentation and introduce delightful contrasting textures or flavors.

Side Dishes

This Brownie Cupcake Recipe with Chocolate Buttercream Frosting Recipe pairs wonderfully with a scoop of vanilla ice cream or fresh berries. A tall glass of cold milk or a bold cup of coffee also complements the richness perfectly.

Creative Ways to Present

Present your cupcakes on a tiered cake stand for special occasions or package them individually in decorative cupcake boxes for gifting. You can even create a cupcake bouquet by arranging decorated cupcakes on sticks in a vase for a unique dessert centerpiece.

Make Ahead and Storage

Storing Leftovers

Store leftover cupcakes in an airtight container at room temperature for up to two days. After that, refrigerate them wrapped or in a container to maintain freshness. Let them come to room temperature before serving for the best flavor and texture.

Freezing

You can freeze unfrosted brownie cupcakes by wrapping them tightly in plastic wrap and placing them in a freezer-safe container. When ready to enjoy, thaw overnight in the refrigerator. It’s best to frost the cupcakes after they’ve thawed to keep the frosting fresh and creamy.

Reheating

If you want a warm treat, gently warm a cupcake in the microwave for about 10 seconds, but be careful not to overheat and melt the frosting. This will bring out the gooey chocolate notes for an extra indulgent bite.

FAQs

Can I use homemade brownie batter instead of a boxed mix?

Absolutely! While the boxed mix makes this recipe quick and easy, using your favorite homemade brownie batter works beautifully. Just adjust the flour and sugar quantities accordingly to maintain the cupcake texture.

Is sour cream necessary in the recipe?

Sour cream adds moisture and a slight tang that keeps the brownie cupcakes tender. You can substitute it with Greek yogurt if needed, but avoid skipping it altogether for best results.

Can I make this recipe gluten-free?

To make these cupcakes gluten-free, use a gluten-free brownie mix and substitute the all-purpose flour with a gluten-free flour blend. Be sure to check that your other ingredients contain no gluten as well.

How long does the chocolate buttercream frosting stay fresh?

The frosting will stay fresh for about 3-4 days if stored in an airtight container in the refrigerator. Bring it back to room temperature and give it a quick whisk before spreading if it firms up too much.

Can I color the frosting?

Yes! Adding a few drops of gel food coloring is a great way to customize your frosting color. Just mix it in thoroughly and adjust the powdered sugar or milk as needed to maintain the perfect consistency.

Final Thoughts

This Brownie Cupcake Recipe with Chocolate Buttercream Frosting Recipe is a showstopper that’s surprisingly easy to make and sure to impress anyone lucky enough to have a taste. Whether for a party, a cozy treat, or just because, these cupcakes bring together the best of brownies and cupcakes with an irresistible chocolate frosting that’s pure bliss. Give this recipe a try — your chocolate-loving heart will thank you!