Picture this: a cozy evening at home, the sweet smell of chocolate filling the air, and indulgent Baileys Buttercream Brownies cooling on the counter. I can practically taste the rich, fudgy goodness melting in my mouth just thinking about it. After a long week, these brownies have become my secret weapon for turning any ordinary night into a delightful treat that even the fastest of fast food can’t compete with.

Not only do these brownies boast a texture that’s both dense and gooey, but they also come topped with a luxurious Baileys-infused buttercream that takes them right over the top. Whether you’re hosting friends for a game night or simply looking to pamper yourself, these goodies are sure to impress.
In just 45 minutes, you can whip up a batch that serves 12 – perfect for sharing (or keeping all to yourself!). Let’s dive into this recipe that transforms simple ingredients into a crowd-pleasing dessert that will have everyone asking for seconds!

Why are Baileys Buttercream Brownies irresistible?
Decadent Flavor: The rich blend of chocolate and Baileys creates a flavor explosion that’s hard to resist.
Easy to Make: This recipe is straightforward, so you don’t need to be a baking expert to achieve brownie bliss.
Luxurious Topping: The homemade Baileys buttercream elevates these brownies, adding a smooth finish that both looks and tastes divine.
Perfect for All Occasions: Whether it’s a cozy night in or a gathering with friends, these brownies are adaptable and sure to impress.
Quick Satisfaction: In just 45 minutes, you’ll have a delightful treat ready to enjoy or share! Looking for more sweet inspirations? Check out my easy dessert ideas that can turn any day into a celebration!
Baileys Buttercream Brownies Ingredients
• To create these indulgent Baileys Buttercream Brownies, gather the following ingredients:
- 1 cup unsalted butter – ensure it’s softened for easy creaming
- 1 cup granulated sugar – adds sweetness and structure
- 1 cup packed brown sugar – for a deeper flavor and moisture
- 4 large eggs – provides richness and helps bind ingredients
- 1 teaspoon vanilla extract – enhances the overall flavor profile
- 1 cup all-purpose flour – the foundation for the brownie batter
- 1 cup unsweetened cocoa powder – yield that rich chocolate taste
- 1/2 teaspoon salt – balances the sweetness
- 1/2 cup Baileys Irish Cream – for that signature smooth flavor
- 1 cup powdered sugar – sweetens the buttercream topping
Get ready to treat yourself and your loved ones with these delightful brownies!
How to Make Baileys Buttercream Brownies
Preheat the oven to 350°F (175°C) and grease a baking pan. This ensures your brownies will bake evenly and won’t stick to the pan.
Cream together the softened butter, granulated sugar, and brown sugar in a large bowl until smooth and fluffy. This step is crucial for achieving that delectable texture.
Add the eggs one at a time, mixing well after each addition. Then, stir in the vanilla extract for an extra layer of flavor.
Combine the flour, cocoa powder, and salt, gradually adding them to the wet mixture. Mix until just incorporated—overmixing can lead to dense brownies, and we want fudgy bliss!
Pour the batter into the prepared pan, smoothing it out evenly with a spatula. The texture should be thick and luscious, promising deliciousness ahead.
Bake for 30 minutes or until a toothpick inserted into the center comes out clean. Keep an eye on the clock; you want them to be fudgy, not overbaked!
Cool the brownies completely in the pan on a wire rack. Patience is key here, as this cooling time allows for perfect buttercream application!
For the Buttercream: In a separate bowl, beat together the powdered sugar and Baileys Irish Cream until smooth and creamy. This decadent icing will bring your brownies to new heights.
Spread the luscious Baileys buttercream over the cooled brownies, covering every inch for that indulgent finish. Your dessert is now ready to be devoured!
Optional: Add chocolate shavings on top for an extra touch of elegance.
Exact quantities are listed in the recipe card below.

What to Serve with Baileys Buttercream Brownies?
Indulge your senses with a delightful spread that complements the rich, chocolatey goodness of these brownies.
Fresh Berries: The tartness of strawberries or raspberries adds a refreshing contrast that balances the sweetness.
Vanilla Ice Cream: A scoop of creamy vanilla ice cream brings a delightful creaminess that pairs perfectly with the fudgy texture. Imagine the warm brownie melting into the cold ice cream—pure bliss!
Whipped Cream: A dollop of freshly whipped cream enhances the indulgence, creating a heavenly combo with the brownie and buttercream.
Strong Coffee: A robust cup of coffee complements the chocolate flavor and wakes up the senses, offering a delightful contrast.
Chocolate Sauce: Drizzle some warm chocolate sauce over your brownie for an extra chocolatey experience that chocolate lovers will adore!
Caramel Sauce: A touch of homemade or store-bought caramel adds a sweet richness that harmonizes beautifully with the Baileys buttercream.
Mint Tea: A refreshing mint tea acts as a perfect palate cleanser, leaving you ready for another bite of brownie bliss.
Nutty Brownies: Try serving with a scoop of pecan or walnut brownies for a fun variation of texture and flavor!
Milk: A classic pairing, a cold glass of milk rounds off the dessert experience beautifully, soothing any chocolate cravings.
Tips for the Best Baileys Buttercream Brownies
Use Room Temperature Ingredients: Ensure your butter and eggs are at room temperature for a smooth batter; this helps achieve the perfect fudgy texture.
Don’t Overmix: When combining the dry ingredients with the wet, mix just until incorporated. Overmixing can lead to tough brownies instead of the desired gooeyness.
Check for Doneness: Start checking your brownies a few minutes before the cooking time is up. They are done when a toothpick comes out with a few moist crumbs, not clean.
Let Cool Completely: Allow the brownies to cool fully before frosting with the Baileys buttercream. This prevents the icing from melting and losing its fluffy texture.
Store Properly: Keep leftovers in an airtight container at room temperature for up to three days for the best flavor and texture preservation.
Baileys Buttercream Brownies Variations
Feel free to let your imagination run wild and give these brownies your personal twist for an even more delightful experience!
Gluten-Free: Substitute all-purpose flour with a 1:1 gluten-free baking blend to make these brownies gluten-free without sacrificing taste.
Nutty Delight: Fold in 1 cup of chopped walnuts or pecans into the batter for a satisfying crunch and a nutty flavor boost. Nuts add a lovely texture to the fudgy richness.
Dairy-Free: Swap the butter for vegan butter and use a dairy-free Irish cream alternative to make these brownies dairy-free while keeping the indulgence alive.
Mint Chocolate: Add 1 teaspoon of peppermint extract to the batter for a refreshing minty twist that pairs beautifully with chocolate. Just the right balance between peppermint freshness and rich cocoa.
Spicy Kick: Add a pinch of cayenne pepper to the batter for a surprising heat that offsets the sweetness beautifully—it’s a subtle way to awaken your taste buds!
Additional Frosting Flair: Mix in 2 tablespoons of chocolate hazelnut spread into the buttercream for an extra layer of rich flavor that complements the Baileys beautifully.
Caramel Swirl: Drizzle caramel sauce into the batter before baking for pockets of gooey caramel goodness that will make each bite a sweet surprise.
Double Chocolate: Fold in a cup of chocolate chips to the batter for an even more decadent chocolate experience. Extra chocolate is always a win in my book!
How to Store and Freeze Baileys Buttercream Brownies
Room Temperature: Store brownies in an airtight container at room temperature for up to 3 days. This will keep them moist and delicious without losing their gooey texture.
Fridge: If you prefer them chilled, these brownies can be kept in the fridge for up to a week. Just remember to let them come to room temperature before serving for the best experience.
Freezer: For longer storage, freeze the unwrapped brownies in an airtight container for up to 3 months. Thaw them in the fridge overnight, then top with fresh Baileys buttercream before serving.
Reheating: If you want a warm, fudgy treat, simply microwave a brownie for about 10-15 seconds. Enjoy it with a scoop of vanilla ice cream for an extra indulgent dessert!
Make Ahead Options
These Baileys Buttercream Brownies are a fantastic option for busy home cooks looking to save time without sacrificing flavor! You can prepare the brownie batter up to 24 hours in advance and refrigerate it, ensuring its freshness. Simply mix the ingredients as per the recipe, cover the bowl with plastic wrap, and store in the fridge. When you’re ready to bake, bring the batter to room temperature before pouring it into the pan and following the baking instructions. Additionally, the buttercream can be made up to 3 days ahead; just store it in an airtight container in the refrigerator. Before spreading on the brownies, give it a quick stir to restore its creamy consistency. By prepping ahead, you’ll enjoy delicious, homemade brownies with minimal last-minute effort!

Baileys Buttercream Brownies Recipe FAQs
How do I select the right ripeness of ingredients?
Absolutely! For the best results, use softened, room-temperature unsalted butter. This allows for easy creaming with sugars. Eggs should also be at room temperature to help incorporate air for a lighter texture.
How should I store my Baileys Buttercream Brownies?
You can store these delectable brownies in an airtight container at room temperature for up to 3 days. If you want them to last a bit longer, keep them in the fridge, where they’ll stay fresh for up to a week.
Can I freeze Baileys Buttercream Brownies?
Yes, you can absolutely freeze them! For best results, freeze the unwrapped brownies in an airtight container for up to 3 months. To thaw, place them in the fridge overnight. Once thawed, feel free to whip up some fresh Baileys buttercream for that extra touch.
What should I do if my brownies turn out too dry?
If your brownies are looking a bit dry, they might have been overbaked. Make sure to check them a few minutes before the suggested cooking time. If they seem too dry after baking, try adding a dollop of warm chocolate sauce or ice cream when serving to moisten them!
Are Baileys Buttercream Brownies safe for guests with allergies?
Always a good question! These brownies contain gluten (from flour) and dairy (from butter and Irish cream). If you’re catering for someone with allergies, consider using gluten-free flour and dairy alternatives. Enjoy the flexibility of adapting this recipe to fit your needs!

Indulgent Baileys Buttercream Brownies You’ll Crave Forever
Ingredients
Equipment
Method
- Preheat the oven to 350°F (175°C) and grease a baking pan.
- Cream together the softened butter, granulated sugar, and brown sugar in a large bowl until smooth and fluffy.
- Add the eggs one at a time, mixing well after each addition, then stir in the vanilla extract.
- Combine the flour, cocoa powder, and salt, gradually adding them to the wet mixture and mix until just incorporated.
- Pour the batter into the prepared pan, smoothing it out evenly with a spatula.
- Bake for 30 minutes or until a toothpick inserted into the center comes out clean.
- Cool the brownies completely in the pan on a wire rack.
- In a separate bowl, beat together the powdered sugar and Baileys Irish Cream until smooth and creamy.
- Spread the Baileys buttercream over the cooled brownies.