Why Make This Recipe
Baileys Buttercream Brownies are a delightful treat for anyone craving a rich and fudgy brownie topped with a creamy and sweet buttercream frosting. The addition of Baileys Irish Cream adds a smooth and indulgent twist, making these brownies perfect for special occasions or simply when you need a little something sweet. They’re easy to make, and the layers of flavor will impress your family and friends.
How to Make Baileys Buttercream Brownies
Ingredients
Brownies
- 1 box brownie mix plus required eggs, oil, and water as indicated on the box
- ¼ cup Baileys Irish Cream (optional)
Baileys Buttercream
- ½ cup salted butter, softened
- 2½ cups powdered sugar, sifted
- 1 teaspoon vanilla extract
- 2 tablespoons Baileys Irish Cream
- 3 to 4 tablespoons heavy whipping cream
Ganache
- 1 cup semi-sweet chocolate chips
- ⅓ cup heavy whipping cream
- 2 tablespoons Baileys Irish Cream
Directions
- Preheat your oven according to the brownie mix package instructions. Line an 8×8 inch baking pan with parchment paper and set it aside.
- Prepare the brownies as directed on the package, but substitute ¼ cup of water with ¼ cup of Baileys Irish Cream if you want an extra flavor kick. Pour the batter into the prepared pan and bake according to the package instructions. Once baked, remove and let them cool completely.
- In a mixing bowl, beat the softened butter, vanilla extract, and sifted powdered sugar together until combined. With the mixer on low speed, slowly add 2 tablespoons of Baileys Irish Cream and continue to beat. Gradually add heavy cream, one tablespoon at a time, until the frosting is fluffy and smooth.
- Spread the buttercream evenly over the cooled brownies using an offset spatula. Chill in the freezer while you prepare the ganache.
- In a microwave-safe bowl, combine ⅓ cup heavy whipping cream with 2 tablespoons of Baileys Irish Cream. Heat in the microwave for 45-60 seconds until it is just simmering. Pour the hot cream over the chocolate chips and let it sit for 3 to 4 minutes. Stir until smooth.
- Spread the ganache evenly over the chilled buttercream layer. Allow the ganache to set on the countertop for 45-60 minutes or refrigerate for about 15 minutes.
- Lift the brownies from the pan using the parchment paper flaps, cut into squares, and serve immediately.

How to Serve Baileys Buttercream Brownies
These decadent brownies can be served warm or chilled. They pair wonderfully with a scoop of vanilla ice cream or a hot cup of coffee. You can also dust them with extra powdered sugar for an elegant touch.
How to Store Baileys Buttercream Brownies
Once cooled, store the brownies in an airtight container at room temperature for up to three days. If you want to keep them fresh for longer, you can refrigerate them for up to a week. Just make sure to bring them back to room temperature before serving for the best taste!
Tips to Make Baileys Buttercream Brownies
- Make sure your butter is softened for easy mixing.
- Sift the powdered sugar to avoid lumps in your buttercream.
- Don’t skip chilling the frosting and ganache layers; it helps them set properly.
- Feel free to adjust the amount of Baileys Irish Cream based on your taste preference.
Variation
You can add chopped nuts or chocolate chips into the brownie batter for extra texture. For a different flavor, feel free to experiment with different flavored liqueurs instead of Baileys.
FAQs
Can I use homemade brownie batter instead of a box mix?
Yes, you can use your favorite homemade brownie recipe as long as it yields a similar consistency.
How do I know when the brownies are done baking?
You can check by inserting a toothpick into the center of the brownies; if it comes out with a few moist crumbs, they are done.
Can I freeze the brownies?
Yes, you can freeze the brownies. Wrap them tightly in plastic wrap and place them in an airtight container. They will last for up to three months in the freezer.
Baileys Buttercream Brownies
- Total Time: 45 minutes
- Yield: 16 squares 1x
- Diet: Vegetarian
Description
Delightful fudgy brownies topped with creamy Baileys buttercream and ganache, perfect for special occasions or a sweet treat.
Ingredients
- 1 box brownie mix plus required eggs, oil, and water as indicated on the box
- ¼ cup Baileys Irish Cream (optional)
- ½ cup salted butter, softened
- 2½ cups powdered sugar, sifted
- 1 teaspoon vanilla extract
- 2 tablespoons Baileys Irish Cream
- 3 to 4 tablespoons heavy whipping cream
- 1 cup semi-sweet chocolate chips
- ⅓ cup heavy whipping cream
- 2 tablespoons Baileys Irish Cream
Instructions
- Preheat your oven according to the brownie mix package instructions. Line an 8×8 inch baking pan with parchment paper and set it aside.
- Prepare the brownies as directed on the package, adding ¼ cup of Baileys Irish Cream for extra flavor. Pour the batter into the prepared pan and bake according to package instructions. Once baked, remove and let cool completely.
- In a mixing bowl, beat softened butter, vanilla extract, and sifted powdered sugar until combined. Gradually add 2 tablespoons of Baileys Irish Cream and heavy cream until fluffy and smooth.
- Spread the buttercream over the cooled brownies using an offset spatula and chill in the freezer.
- In a microwave-safe bowl, combine ⅓ cup heavy whipping cream with 2 tablespoons of Baileys Irish Cream. Heat until simmering, then pour over chocolate chips and let sit for 3 to 4 minutes. Stir until smooth.
- Spread the ganache over the buttercream layer and let it set for 45-60 minutes.
- Lift the brownies from the pan using parchment paper, cut into squares, and serve immediately.
Notes
Serve warm or chilled with vanilla ice cream or coffee. Store in an airtight container at room temperature for up to three days, or refrigerate for up to a week.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 square
- Calories: 350
- Sugar: 28g
- Sodium: 200mg
- Fat: 18g
- Saturated Fat: 10g
- Unsaturated Fat: 6g
- Trans Fat: 0g
- Carbohydrates: 45g
- Fiber: 1g
- Protein: 4g
- Cholesterol: 30mg




