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Bailey’s Brownies

Bailey’s Brownies are a rich and fudge-y brownie topped with fluffy Bailey’s spiked buttercream! These are perfect for a fun adult dessert, especially on St. Patrick’s Day!

We all know that Bailey’s pairs so lovely with hot chocolate, so combining Bailey’s and brownies seems like an obvious winner! These brownies have intense chocolate flavor from the addition of semisweet chocolate AND cocoa powder in the brownies, and the Bailey’s flavor comes in the Bailey’s buttercream. A light and fluffy Buttercream with just a hint (but definitely noticeable!) of the Irish cream – you are going to want to lick the beater, for sure!

What You’ll Need

  • Unsalted Butter
  • Eggs
  • Granulated Sugar
  • Semisweet Chocolate
  • Flour
  • Salt
  • Vanilla
  • Cocoa Powder
  • Powdered Sugar
  • Bailey’s

How to Make Bailey’s Brownies

This recipe starts by melting together butter and chocolate in a pan on the stovetop. Once it’s all melted together, remove the pan from the heat and stir in the sugar. It’s going to look grainy, but that’s okay! Next, add the eggs, one at a time, stirring until well combined. At this point, the mixture should be smoother and shiny.

Next, stir in the vanilla, followed by the salt, cocoa powder, and flour. Pour the mixture into a grease 9×13″ pan and bake in the preheated oven.

Once the brownies have baked and cooled make the frosting. Beat butter until creamy, about 2-3 minutes, and then add the powdered sugar and Bailey’s. It should be super creamy and fluffy. Spread on top of the cooled brownies. Finish it by melting some more chocolate and drizzling over the frosting. Cut into squares and enjoy!

How to Store Bailey’s Brownies

These are best stored in the refrigerator. I like to keep them in the baking dish they were baked in, covered with a lid or plastic wrap. I love this baking dish with a lid!

How to Know When Brownies Are Done

No one wants over-baked brownies, so it’s important to know when to take them out of the oven! Pay attention to the baking time range and start checking them at the lower end of the range. To test, place a toothpick in the center of the brownies. The toothpick should come out with a few crumbs and moist, not wet.

Like this recipe? Check these out, too!

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Bailey's Brownies

Bailey’s Brownies

A rich fudge-y brownie topped with a Bailey's buttercream!
Print Pin Rate
Course: Dessert
Cuisine: American
Keyword: brownies, chocolate, dessert
Prep Time: 25 minutes
Cook Time: 30 minutes
Cool Time: 1 hour
Total Time: 1 hour 55 minutes
Servings: 24 brownies
Calories: 338kcal
Author: Taylor


  • 1 cup unsalted butter
  • 8 ounces semisweet chocolate, chopped you can also use semisweet chocolate chips
  • 2 cups granulated sugar
  • 4 large eggs
  • 2 tsp pure vanilla extract
  • 1/2 tsp salt
  • 3/4 cup cocoa powder
  • 3/4 cup all-purpose flour

Bailey's Buttercream

  • 3/4 cup unsalted butter at room tempearture
  • 3 1/2 cups powdered sugar
  • 4 tbsp Bailey'ss


  • Preheat the oven to 350 degrees F and spray a 9×13" baking dish with cooking spray.
  • In a medium saucepan over medium heat, melt the butter and chopped chocolate/chocolate chips.
  • Remove from heat and stir in the sugar.
  • Add the eggs one at a time, stirring well between each addition.
  • Add the vanilla and salt, mixing well to combine.
  • Stir in the cocoa powder and flour, until combined.
  • Transfer into the prepared baking dish.
  • Bake in the preheated oven for 30-35 minutes, until a toothpick comes out clean.
  • Let cool completely.
  • In a large bowl with an electric mixer, beat the butter until creamy, about 1 minute.
  • Add the powdered sugar 1/2 cup at a time, mixing until combined.
  • Add the Bailey's, mixing until creamy and combined.
  • Spread over cooled brownies.
  • Cut into squares and enjoy!


Calories: 338kcal | Carbohydrates: 44g | Protein: 3g | Fat: 18g | Saturated Fat: 11g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 5g | Trans Fat: 1g | Cholesterol: 63mg | Sodium: 63mg | Potassium: 114mg | Fiber: 2g | Sugar: 37g | Vitamin A: 458IU | Calcium: 18mg | Iron: 1mg
Tried this recipe?Mention @greensnchocolate to let me know!
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