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Indulgent Brownie Cupcakes with Chocolate Buttercream Bliss

Published: Dec 3, 2025 by Lina maywgor · This post may contain affiliate links ·

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As I sifted through my pantry on a cozy afternoon, I stumbled upon a box of brownie mix, igniting a spark of chocolate craving I couldn’t resist. This led me to whip up these delightful Brownie Cupcakes with Chocolate Buttercream, a treat that’s both indulgent and easy to prepare. With the quick mix of ingredients, you won’t be tied down in the kitchen for long, allowing you to savor each decadent bite of these perfectly baked cupcakes. They strike just the right balance between a rich brownie and a fluffy cupcake, making them an absolute crowd-pleaser at any gathering. Curious about how this simple recipe can transform your dessert game? Let’s get baking!

Brownie Cupcakes Chocolate Buttercream

Why are these Brownie Cupcakes irresistible?

Decadent chocolate goodness: Each bite offers a melt-in-your-mouth experience that's hard to resist, combining the richness of brownies with a light spoon of cupcake fluff.

Quick and easy: In just 40 minutes, you can have a delicious batch ready, making it perfect for both spontaneous cravings and planned gatherings.

Crowd-pleaser: These treats are sure to impress guests at any event, blending familiar flavors with a surprising twist.

Frosting perfection: The homemade chocolate buttercream adds an extra layer of indulgence that takes things over the top.

Versatile treat: Great for parties, family gatherings, or just when you need a little chocolate comfort in your life.

Dive into this marvelous recipe, and discover how these simple brownie cupcakes can bring joy to your kitchen!

Brownie Cupcakes Chocolate Buttercream Ingredients

For the Cupcakes

  • Brownie mix – the base for rich, chocolatey flavor that makes these cupcakes truly special.
  • All-purpose flour – helps to achieve a perfect cupcake texture, light and delightful!
  • Granulated sugar – adds necessary sweetness to balance the chocolate richness.
  • Cocoa powder – intensifies the chocolate flavor for that decadent brownie taste.
  • Baking powder – ensures your cupcakes rise beautifully, creating a fluffy mouthfeel.
  • Eggs – bind the ingredients together and add moisture, keeping the cupcakes soft.
  • Sour cream – brings added moisture and a touch of tang that enhances the chocolate.
  • Melted butter – enriches the batter, resulting in a luxurious, fudgy texture.
  • Hot coffee or water – amplifies the chocolate flavor; coffee is a fantastic secret ingredient!

For the Chocolate Buttercream

  • Unsalted butter – creates a creamy, rich frosting that’s full of flavor.
  • Powdered sugar – sweetens the frosting and helps achieve that smooth, spreadable consistency.
  • Cocoa powder – gives the buttercream its deep chocolate flavor, complementing the cupcakes perfectly.
  • Salt – balances the sweetness, enhancing the overall flavor profile.
  • Milk – adds the right texture to the frosting; adjust as needed to reach your preferred consistency.

Now that you have the ingredients, let’s get you baking these irresistible brownie cupcakes with chocolate buttercream!

Step‑by‑Step Instructions for Brownie Cupcakes Chocolate Buttercream

Step 1: Preheat the Oven
Begin by preheating your oven to 350°F (175°C) and grab a cupcake pan. Line it with paper liners to ensure easy removal of your heavenly Brownie Cupcakes Chocolate Buttercream once baked. While the oven warms up, you'll set the stage for delicious chocolate goodness to come.

Step 2: Mix the Dry Ingredients
In a large mixing bowl, carefully combine the brownie mix, all-purpose flour, granulated sugar, cocoa powder, and baking powder. Whisk these dry ingredients together until fully combined; you're looking for a smooth blend free of lumps, which will help your cupcakes rise beautifully and achieve that perfect texture.

Step 3: Add Wet Ingredients
Next, gently add in the wet ingredients: eggs, sour cream, melted butter, and hot coffee or water. Using a spatula or whisk, stir the mixture until it becomes a smooth, glossy batter. This combination ensures that your Brownie Cupcakes are rich and moist, ready to delight your taste buds.

Step 4: Fill the Cupcake Liners
Using a cookie scoop or measuring cup, fill each prepared cupcake liner about two-thirds full with the delicious brownie batter. Be careful not to overfill, as the cupcakes will rise during baking. You’ll soon have a tray of chocolatey goodness ready to go into the oven!

Step 5: Bake the Cupcakes
Place your filled cupcake pan in the preheated oven and bake for 18-20 minutes. Keep an eye on them, and as you approach the 18-minute mark, test for doneness by inserting a toothpick into the center; it should come out clean when your Brownie Cupcakes are perfectly baked.

Step 6: Cool the Cupcakes
Once baked, carefully transfer the cupcakes to a cooling rack, allowing them to cool completely. This step is crucial, as it prepares your cupcakes for the luscious chocolate buttercream that is going on top, ensuring it doesn’t melt into a puddle of sweetness.

Step 7: Prepare the Chocolate Buttercream
In a mixing bowl, beat the softened unsalted butter until creamy and smooth. Gradually mix in the powdered sugar and cocoa powder, adding a pinch of salt to balance the sweetness. As you create your frosting, drizzle in milk until achieving your desired consistency—smooth enough for spreading or piping.

Step 8: Frost the Cupcakes
Once your cupcakes are completely cool, generously frost them with your chocolate buttercream using a piping bag or offset spatula. Don’t be shy! A lovely swirl of frosting on each Brownie Cupcakes Chocolate Buttercream adds an irresistible touch, making them as delightful to the eye as they are to the palate.

Brownie Cupcakes Chocolate Buttercream

How to Store and Freeze Brownie Cupcakes Chocolate Buttercream

Room Temperature: Keep your brownie cupcakes at room temperature in an airtight container for up to 3 days. This maintains their delightful texture and prevents drying out.

Fridge: For longer freshness, store the cupcakes in the fridge for up to a week. Just ensure they’re in a sealed container to avoid absorbing any odors.

Freezer: If you want to save them for later, wrap each cupcake tightly in plastic wrap and place them in a freezer-safe bag. They can be frozen for up to 3 months!

Reheating: To enjoy frozen brownies, thaw them in the fridge overnight, then bring them to room temperature before serving. Optionally, you can give them a light warm-up in the microwave for that fresh-baked taste again.

Brownie Cupcakes Chocolate Buttercream Variations

Feel free to explore your creativity and customize these delightful treats with these fun ideas!

  • Gluten-Free: Substitute the all-purpose flour with a gluten-free blend, ensuring everyone can enjoy these chocolate delights.

  • Nutty Twist: Fold in 1 cup of chopped walnuts or pecans to the batter for a delicious crunch and added flavor.

  • Minty Fresh: Add 1 teaspoon of peppermint extract to the batter for a refreshing twist that pairs perfectly with chocolate.

  • Spicy Kick: Incorporate a pinch of cayenne pepper or chili powder into the batter for a subtle heat that enhances the chocolate richness.

  • Fruit-Filled: Top each cupcake with fresh raspberries or strawberries before frosting for a burst of color and fruity goodness.

  • Vegan Option: Replace eggs with applesauce and use a plant-based butter and milk to make these cupcakes vegan-friendly without sacrificing flavor.

  • Caramel Surprise: Swirl some caramel sauce into the batter before baking for a sweet, gooey surprise in each bite.

  • Chocolate Drizzle: For extra decadence, drizzle melted chocolate over the frosted cupcakes for a visually stunning and flavorful finish.

Get ready to impress your friends and family with these irresistible brownie cupcake variations!

Make Ahead Options

These Brownie Cupcakes Chocolate Buttercream are a fantastic option for meal prep enthusiasts! You can prepare the cupcake batter up to 24 hours in advance by combining the dry ingredients and mixing in the wet ingredients, then refrigerate the mixture overnight. The baked cupcakes can also be made up to 3 days ahead; simply cool them completely before storing in an airtight container to maintain their moistness. For the best results, frost them with the chocolate buttercream just before serving, ensuring the frosting stays fresh and creamy. This way, you can enjoy delicious, homemade brownie cupcakes whenever the craving strikes, making your busy weeknights a little sweeter!

Tips for the Best Brownie Cupcakes

  • Check Expiry Dates: Always ensure your brownie mix, baking powder, and other ingredients are fresh. Expired items can lead to flat cupcakes that disappoint.

  • Don’t Overmix: Mix your batter until just combined. Overmixing can cause tough cupcakes instead of the desired soft texture.

  • Use a Cookie Scoop: For uniformly sized cupcakes, a cookie scoop helps you fill each liner evenly and prevents overflow while baking.

  • Cooling is Key: Allow the cupcakes to cool completely before frosting them. This avoids the chocolate buttercream melting into a gooey mess.

  • Taste Test the Frosting: Adjust the sweetness of your chocolate buttercream by adding more cocoa or powdered sugar. This ensures the perfect balance to complement your Brownie Cupcakes Chocolate Buttercream.

What to Serve with Brownie Cupcakes Chocolate Buttercream?

Indulging in decadent brownie cupcakes is best enjoyed alongside delightful accompaniments that elevate the whole experience.

  • Vanilla Ice Cream: A scoop of creamy vanilla ice cream adds a delightful temperature contrast, enhancing the rich chocolate flavor beautifully.

  • Fresh Berries: Juicy strawberries or raspberries add a burst of freshness, balancing the sweetness of the cupcakes with their tartness.

  • Espresso: Enjoying a shot of espresso alongside these cupcakes amplifies the chocolate taste, creating a wonderfully complementary pairing for coffee lovers.

  • Chocolate Ganache: Drizzling extra chocolate ganache on top transforms them into an ultra-decadent treat that’s simply irresistible.

  • Caramel Sauce: A drizzle of warm caramel provides a silky sweetness that contrasts beautifully with the rich brownie texture.

  • Milk: A classic pairing, a glass of cold milk refreshes every bite, making them the perfect treat for both kids and adults alike.

  • Whipped Cream: Light and airy whipped cream adds a fluffy texture, making each bite feel indulgently rich yet light at the same time.

  • Mint Leaves: Garnishing with fresh mint not only adds a pop of vibrant color but also provides a refreshing finish to the rich chocolate experience.

Serve these alongside your brownie cupcakes chocolate buttercream for a truly delightful dessert spread that everyone will adore!

Brownie Cupcakes Chocolate Buttercream

Brownie Cupcakes Chocolate Buttercream Recipe FAQs

How do I choose the best brownie mix for these cupcakes?
Absolutely! When selecting a brownie mix, look for one that says "fudgy" or "extra rich." These typically yield the best texture and flavor for your Brownie Cupcakes Chocolate Buttercream. Check for any added ingredients like chocolate chips for an extra chocolate kick!

What’s the best way to store leftover cupcakes?
Very simple! Store the brownie cupcakes in an airtight container at room temperature for up to 3 days. If you’re extending their life, keep them in the fridge for up to a week. Just ensure they are well-sealed to keep them moist and delicious!

Can I freeze these brownie cupcakes?
Absolutely! To freeze, wrap each cupcake tightly in plastic wrap and place them in a freezer-safe bag. They will keep well for up to 3 months. When you're ready to enjoy them, simply thaw in the fridge overnight and allow to come to room temperature before serving.

What if my cupcakes turn out dry?
If your brownies are dry, it could be due to an overbake or not enough moisture in the batter. Make sure to check the cupcakes at the 18-minute mark, and do a toothpick test. It’s okay if a few crumbs stick to the toothpick, but it shouldn’t be wet. If the batter is overly thick, you can add an extra tablespoon of sour cream to improve moisture!

Are there any dietary considerations for these cupcakes?
Definitely! If you're catering to allergies, consider using gluten-free brownie mix and dairy-free butter for those with gluten or dairy restrictions. Always check the ingredient labels, especially if serving to children or those with severe allergies, to ensure everyone can indulge safely.

How can I adjust the sweetness of the buttercream?
Great question! If you find your chocolate buttercream too sweet, feel free to stir in a couple of teaspoons of unsweetened cocoa powder or a pinch of salt to balance the sweetness. Taste as you go until it’s perfect for your palate. Enjoy crafting your ideal frosting!

Brownie Cupcakes Chocolate Buttercream

Indulgent Brownie Cupcakes with Chocolate Buttercream Bliss

Try these Brownie Cupcakes with Chocolate Buttercream, a delightful treat that strikes the perfect balance between rich brownie and fluffy cupcake.
Print Recipe Pin Recipe
Prep Time 20 minutes mins
Cook Time 20 minutes mins
Cooling Time 20 minutes mins
Total Time 1 hour hr
Servings: 12 cupcakes
Course: easy cakes
Cuisine: American
Calories: 300
Ingredients Equipment Method Nutrition Notes

Ingredients
  

For the Cupcakes
  • 1 box Brownie mix
  • 1 cup All-purpose flour
  • 1 cup Granulated sugar
  • ½ cup Cocoa powder
  • 1 teaspoon Baking powder
  • 2 Eggs
  • ½ cup Sour cream
  • ½ cup Melted butter
  • 1 cup Hot coffee or water
For the Chocolate Buttercream
  • ½ cup Unsalted butter softened
  • 2 cups Powdered sugar
  • ¼ cup Cocoa powder
  • ¼ teaspoon Salt
  • 2 tablespoons Milk adjust as needed

Equipment

  • cupcake pan
  • Mixing Bowl
  • Whisk
  • Spatula
  • Piping bag

Method
 

Preparation
  1. Preheat your oven to 350°F (175°C) and line a cupcake pan with paper liners.
  2. In a large mixing bowl, whisk together brownie mix, flour, sugar, cocoa powder, and baking powder until well combined.
  3. Add eggs, sour cream, melted butter, and hot coffee or water to the dry ingredients, stirring until smooth.
  4. Fill each cupcake liner about two-thirds full with the batter.
  5. Bake for 18-20 minutes, testing doneness with a toothpick.
  6. Cool the cupcakes completely on a wire rack.
  7. In a mixing bowl, beat the softened butter until creamy. Gradually add in powdered sugar and cocoa powder, with a pinch of salt. Adjust with milk for desired consistency.
  8. Frost the cooled cupcakes generously with the chocolate buttercream using a piping bag or spatula.

Nutrition

Serving: 1cupcakeCalories: 300kcalCarbohydrates: 45gProtein: 3gFat: 14gSaturated Fat: 8gCholesterol: 50mgSodium: 200mgPotassium: 150mgFiber: 1gSugar: 25gVitamin A: 400IUCalcium: 20mgIron: 1.5mg

Notes

Check expiry dates of ingredients, avoid overmixing, and allow cupcakes to cool completely before frosting for the best results.

Tried this recipe?

Let us know how it was!

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Self-taught baker turned Paris-trained pastry pro, I’m here to help you create bakery-worthy cakes in an everyday kitchen.

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