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Decadent Brownie Cupcakes with Velvety Chocolate Buttercream

Published: Dec 4, 2025 by Emilia malwar · This post may contain affiliate links ·

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As I pulled the first batch of these Brownie Cupcakes with Chocolate Buttercream from the oven, a rich, chocolatey aroma wafted through my kitchen, instantly transporting me back to my childhood kitchen where baking was a weekly ritual. These delightful treats combine the beloved texture of brownies with the playful charm of cupcakes, making them an irresistible crowd-pleaser for any occasion. Not only are they quick to whip up—taking just 40 minutes from start to finish—but they also boast a rich chocolate buttercream frosting that transforms them into a festive dessert worthy of any celebration. Whether you’re baking for a gathering or indulging in a cozy night in, these fluffy brownie cupcakes are sure to spark joy. Curious about how to make this scrumptious treat? Let’s get started!

Brownie Cupcakes Chocolate Buttercream

Why are these cupcakes a must-try?

Irresistible aroma: As they bake, the delightful scent of chocolate fills your kitchen, enticing everyone around.
Quick and easy: With only 40 minutes to prepare these gems, you’ll have homemade treats ready in no time.
Decadent flavor: The rich brownie base paired with creamy chocolate buttercream ensures every bite is a slice of heaven.
Versatile dessert: Perfect for birthdays, holidays, or a cozy night in, these cupcakes fit any occasion wonderfully.
Sure crowd-pleaser: Your family and friends will rave about these fluffy delights, and you’ll be the star of any gathering!
Effortless presentation: Frosting them beautifully is a breeze, making them not just delicious but visually appealing too!

Brownie Cupcakes Chocolate Buttercream Ingredients

For the Cupcakes
• Brownie mix – This forms the decadent base of your cupcakes, providing that irresistible brownie flavor.
• All-purpose flour – A little extra flour is added to help achieve a perfect cupcake texture without compromising the fudginess.
• Granulated sugar – Balances the rich chocolate flavor and helps to create a lovely sweetness.
• Cocoa powder – Deepens the chocolate flavor and enhances the overall richness of the brownie cupcakes.
• Baking powder – Gives your cupcakes that fluffy lift, making them light and airy.
• Unsalted butter – The melted butter adds moisture and a luscious taste to the cupcakes.
• Large eggs – Provide structure and stability, contributing to the moist texture of these brownie cupcakes.
• Sour cream – Adds a touch of tanginess while keeping the cupcakes moist and tender.
• Hot coffee or water – Enhances the chocolate flavor; coffee works wonders without adding a coffee taste.

For the Chocolate Buttercream Frosting
• Unsalted butter – Softened butter creates a creamy base for your luscious frosting.
• Powdered sugar – The key to sweetness; it mixes seamlessly into the butter for a smooth frosting.
• Cocoa powder – Adds depth and robust chocolate flavor to your buttercream frosting.
• Salt – A pinch of salt brings out the sweetness and balances the richness of the chocolate.
• Milk – Use as needed to achieve a velvety, pipeable consistency for your frosting.

With these Brownie Cupcakes Chocolate Buttercream ingredients at your fingertips, you're one step closer to creating these delectable treats that will impress everyone at your next gathering!

Step‑by‑Step Instructions for Brownie Cupcakes Chocolate Buttercream

Step 1: Preheat the Oven
Begin by preheating your oven to 350°F (175°C). While the oven heats up, take a moment to line a cupcake pan with paper liners; this will ensure easy removal after baking. The combination of the warm oven and the cupcake liners will get your kitchen ready for these delightful Brownie Cupcakes.

Step 2: Mix the Dry Ingredients
In a large mixing bowl, combine the brownie mix, all-purpose flour, granulated sugar, cocoa powder, and baking powder. Whisk these dry ingredients together thoroughly until they are well blended without any lumps. The mixture should have a rich, chocolatey aroma that gets you excited for these Brownie Cupcakes!

Step 3: Incorporate the Wet Ingredients
Slowly add the large eggs, sour cream, melted unsalted butter, and hot coffee or water to your dry mixture. Using a rubber spatula, stir gently but thoroughly to combine until the batter is smooth and glossy. This should take about 2-3 minutes; the batter will be thick yet cohesive, perfect for your cupcake base.

Step 4: Fill the Cupcake Liners
Using a cookie scoop or a measuring cup, fill each cupcake liner about two-thirds full with the brownie batter. This ensures that your cupcakes will rise nicely without overflowing. As you fill, watch for any air bubbles; gently tap the pan on the counter to release them for even baking.

Step 5: Bake the Cupcakes
Place the cupcake pan into your preheated oven and bake for 18-20 minutes. To check for doneness, insert a toothpick in the center of one cupcake; it should come out clean or with a few moist crumbs attached. Your kitchen will soon be filled with the delightful scent of baking brownies!

Step 6: Cool the Cupcakes
Once baked, carefully remove the cupcakes from the oven and transfer them to a cooling rack. Allow the cupcakes to cool completely in their liners, which should take about 10-15 minutes. Proper cooling helps set their texture, making them ready for a generous layer of chocolate buttercream.

Step 7: Make the Chocolate Buttercream
While the cupcakes cool, start preparing the chocolate buttercream frosting. In a mixing bowl, beat the softened unsalted butter until smooth. Gradually add in the powdered sugar, cocoa powder, and salt while mixing on low speed, increasing gradually until the frosting is fluffy. Add milk as needed to achieve a pipeable consistency.

Step 8: Frost the Cupcakes
Once the cupcakes are completely cool, it’s time to frost them generously. Using a piping bag or an offset spatula, apply the rich chocolate buttercream on top of each cupcake. Feel free to get creative with your decorations; these Brownie Cupcakes with Chocolate Buttercream are not only delicious, but also a treat for the eyes!

Brownie Cupcakes Chocolate Buttercream

How to Store and Freeze Brownie Cupcakes Chocolate Buttercream

Room Temperature: Store the frosted cupcakes in an airtight container for up to 3 days to maintain their moistness and flavor. Keep them in a cool, dry place away from direct sunlight.

Fridge: If you prefer to store them longer, place the cupcakes in the fridge for up to 5 days. Be sure to cover them well to prevent drying out and losing their delicious chocolate buttercream texture.

Freezer: For longer storage, freeze un-frosted cupcakes for up to 2 months. Wrap them individually in plastic wrap and place them in a zip-top bag. Thaw overnight in the fridge before frosting.

Reheating: If you're in the mood for a warm treat, you can microwave a thawed cupcake for about 10-15 seconds. Just be careful not to overheat, as this can affect the delightful texture of your Brownie Cupcakes Chocolate Buttercream.

Expert Tips for Brownie Cupcakes

Measure Correctly: Ensure you measure ingredients accurately, especially the brownie mix and flour. Too much can lead to dry cupcakes.

Don’t Overmix: When combining wet and dry ingredients, mix just until incorporated. Overmixing can result in tough cupcakes instead of the desired fudgy texture.

Cupcake Liners Matter: Use quality cupcake liners that prevent sticking. If you use dark pans, consider reducing the baking time slightly.

Cool Completely: Allow the cupcakes to cool completely before frosting; warm cupcakes can cause the frosting to melt and slide off.

Frosting Consistency: Adjust the milk in the chocolate buttercream gradually. You want it smooth and pipeable but not too runny.

By following these tips, your Brownie Cupcakes Chocolate Buttercream will turn out perfectly luscious and deliciously inviting!

What to Serve with Brownie Cupcakes Chocolate Buttercream

Imagine sinking your teeth into a luscious brownie cupcake, just as indulgent as your favorite dessert, begging to be paired with mouthwatering sides.

  • Vanilla Ice Cream: A scoop of creamy vanilla ice cream creates a delightful contrast, enhancing the chocolate richness while delivering a refreshing chill. The cold ice cream melts into the warm cupcake, creating a heavenly blend.

  • Chocolate Dipped Strawberries: These sweet, juicy treats provide a burst of freshness and color on your dessert plate. The tartness of the strawberries perfectly balances the richness of the brownie cupcakes.

  • Whipped Cream: Light and airy, a generous dollop of homemade whipped cream adds a luxurious touch to each bite. It’s the perfect companion, bringing creaminess to offset the fudgy texture of your brownies.

  • Fresh Berries: Raspberries or blueberries add a pop of color and tang, transforming your plate into a more festive affair. Their natural sweetness complements the intense chocolate flavor while adding a refreshing zing.

  • Espresso or Coffee: A cup of freshly brewed espresso or coffee enhances the chocolate notes in your cupcakes, making this pairing a match made in heaven. The warmth intensifies the flavors, turning dessert into a cozy experience.

  • Chocolate Ganache: For the ultimate chocolate lover, an extra drizzle of rich chocolate ganache over your cupcakes can make them even more decadent. It adds an additional layer of flavor and a delightful shine that’s hard to resist!

Brownie Cupcakes Chocolate Buttercream Variations

Feel free to let your creativity shine as you explore these delightful twists on the classic recipe!

  • Gluten-Free: Substitute the all-purpose flour with a gluten-free blend for scrumptious results everyone can enjoy.
  • Nutty Delight: Add ½ cup of chopped walnuts or pecans to the batter for an extra crunch and rich nutty flavor. Try lightly toasting the nuts first to amplify their taste!
  • Minty Fresh: Incorporate 1 teaspoon of peppermint extract into the batter for a refreshing minty chocolate experience that’s perfect during the holidays.
  • Spice It Up: Add a pinch of cinnamon or chili powder to the batter for a delightful twist that enhances the chocolate flavor.
  • Frosting Alternatives: Instead of chocolate buttercream, top these cupcakes with vanilla frosting or peanut butter frosting for a fun change!
  • Dairy-Free: Use avocado or coconut oil in place of butter and a dairy-free yogurt alternative for the sour cream in the batter. You'll still achieve a moist, delectable cupcake!
  • Flavor Infusion: Replace hot coffee or water with brewed espresso for an enhanced depth of flavor that chocolate lovers will adore.
  • Decadent Toppings: Decorate your cupcakes with caramel drizzle, chocolate shavings, or sea salt to elevate your dessert to new heights!

With these variations, you can easily customize your Brownie Cupcakes Chocolate Buttercream to suit any taste or dietary preference!

Make Ahead Options

These Brownie Cupcakes Chocolate Buttercream are perfect for meal prep enthusiasts! You can make the cupcake batter and refrigerate it for up to 24 hours, sealing it well in an airtight container to maintain moisture and freshness. You can also bake the cupcakes up to 3 days in advance; simply store them in an airtight container at room temperature, ensuring they stay soft and delicious. When you're ready to serve, prepare the chocolate buttercream frosting fresh for the best texture and flavor. Frost your cooled cupcakes right before serving for a delightful treat that tastes just as delicious as if you baked them the same day!

Brownie Cupcakes Chocolate Buttercream

Brownie Cupcakes Chocolate Buttercream Recipe FAQs

What types of brownie mix should I use for the best flavor?
Absolutely! I recommend using a high-quality, standard brownie mix for the best results. Look for a mix that has a cocoa powder content; this usually results in a richer chocolate flavor. If you're feeling adventurous, you can also try different flavors like caramel swirl or hazelnut to elevate your Brownie Cupcakes Chocolate Buttercream experience.

How should I store these cupcakes for optimal freshness?
For maximum freshness, store your frosted brownies in an airtight container at room temperature for up to 3 days. If you want to keep them for up to a week, you can refrigerate them. Just remember to wrap them well to keep the buttercream from drying out. If you need to store them longer, freezing is your best option!

Can I freeze the cupcakes after frosting them?
I recommend freezing un-frosted brownies to maintain the best texture. Wrap each cupcake tightly in plastic wrap and place them in a zip-top bag; they can last up to 2 months in the freezer. When you're ready to enjoy them, simply thaw the cupcakes overnight in the fridge and frost them when they reach room temperature.

What should I do if my cupcakes turned out dry?
Dry cupcakes can be disappointing, but there are a few tips to keep in mind for next time. Ensure you aren’t overbaking them—check for doneness at the 18-minute mark! If they still come out dry, you can brush a simple syrup (made of equal parts sugar and water heated until dissolved) over them to add moisture before frosting.

Are these cupcakes suitable for special diets, like gluten-free?
Yes! You can easily make these brownies gluten-free by substituting the brownie mix with a gluten-free blend. Just make sure to double-check that all other ingredients, such as baking powder and chocolate, are gluten-free as well. With these tweaks, everyone can enjoy the decadence of your Brownie Cupcakes Chocolate Buttercream!

Brownie Cupcakes Chocolate Buttercream

Decadent Brownie Cupcakes with Velvety Chocolate Buttercream

These Brownie Cupcakes with Chocolate Buttercream offer rich flavors and a delightful texture, perfect for any occasion.
Print Recipe Pin Recipe
Prep Time 20 minutes mins
Cook Time 20 minutes mins
Cooling Time 15 minutes mins
Total Time 40 minutes mins
Course Desserts
Cuisine American
Servings 12 cupcakes
Calories 190 kcal

Equipment

  • mixing bowl
  • Cupcake pan
  • whisk
  • Rubber spatula
  • piping bag
  • Cooling rack

Ingredients
  

For the Cupcakes

  • 1 box Brownie mix
  • ½ cup All-purpose flour
  • 1 cup Granulated sugar
  • ¼ cup Cocoa powder
  • 1 teaspoon Baking powder
  • ½ cup Unsalted butter melted
  • 2 large Eggs
  • ½ cup Sour cream
  • ½ cup Hot coffee or water

For the Chocolate Buttercream Frosting

  • ½ cup Unsalted butter softened
  • 2 cups Powdered sugar
  • ¼ cup Cocoa powder
  • ¼ teaspoon Salt
  • 2 tablespoons Milk or as needed

Instructions
 

Step-by-Step Instructions

  • Preheat your oven to 350°F (175°C) and line a cupcake pan with paper liners.
  • In a mixing bowl, combine brownie mix, flour, sugar, cocoa powder, and baking powder.
  • Add eggs, sour cream, melted butter, and hot coffee or water; mix until smooth.
  • Fill cupcake liners about two-thirds full with the batter.
  • Bake for 18-20 minutes; check doneness with a toothpick.
  • Remove from oven and cool on a rack for 10-15 minutes.
  • Beat softened butter, add powdered sugar, cocoa powder, and salt; adjust consistency with milk.
  • Frost cooled cupcakes generously with chocolate buttercream.

Notes

Ensure you measure ingredients accurately to achieve the best texture and flavor. Allow cupcakes to cool completely before frosting.

Nutrition

Serving: 1cupcakeCalories: 190kcalCarbohydrates: 29gProtein: 2gFat: 8gSaturated Fat: 5gCholesterol: 30mgSodium: 180mgPotassium: 120mgFiber: 1gSugar: 15gVitamin A: 200IUCalcium: 20mgIron: 1mg
Keyword baking, Brownie Cupcakes, chocolate, Chocolate Buttercream, cupcakes, dessert
Tried this recipe?Let us know how it was!

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Welcome!

I’m Emilia Malwar, a passionate home baker who finds joy in creating cakes that bring families together.

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