Guinness Brownies with Cream Cheese Frosting Drizzle

Decadent, rich Guinness Brownies with Cream Cheese Frosting Drizzle are the perfect dessert to for St. Patrick’s Day. These dense, dark chocolate brownies get a tangy cream cheese drizzle to finish them off. Makes 12 large brownies.

Love desserts featuring stout beer? You’ve got to try No Churn Guinness Brownie Ice Cream, Chocolate Guinness Cupcakes with Baileys Frosting and Mint Chip Guinness Beer Float!

St. Patrick’s Day always makes me think of the Wearin’ of the Green in Baton Rouge, even though I never made it to the parade during my collegiate years.

However, I attended the Wearin’ of the Green post-parties… and when we lived in Baton Rouge a few years back, we enjoyed all the festivities the parade, pre- and post-parties had to offer.

This year is a bit different since we have a newborn, and we didn’t make the annual Dallas St. Patrick’s Day Parade this past weekend.

That didn’t stop us from celebrating at home with homemade brownies!

Why I love this easy brownie recipe:

These Guinness Brownies with Cream Cheese Frosting Drizzle are just as decadent as they sound… and they’re really, really good if you’re a chocoholic.

The dark chocolate sings when paired with the Guinness. (You could also use another stout if that’s what you’ve got on hand.)

And if these dense brownies weren’t enough on their own, you drizzle some festive green cream cheese frosting on top of them as a finishing touch.

Other festive St. Patrick’s Day desserts: Irish Cream Biscuits with Boozy Chocolate Ganache | Chocolate Guinness Milkshakes with Irish Whiskey Cream | Chocolate Chip Irish Cream Pound Cake | Mint Chip Guinness Beer Float

Need more inspiration? Head on over to my St. Patrick’s Day recipe index for more ideas!

What you need to make Guinness Brownies and their Cream Cheese Frosting drizzle

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• Glass bowls. 
• Glass measuring cup. 
• Square Baking Pan. 

In addition to those tools, you’re going to need some brownie ingredients to make these brownies with stout beer:

• Dark chocolate chunks—I like to use 60%-70% dark chocolate for this, but you can use whatever you’ve got on hand
• Unsalted butter
• Dark brown sugar—but light brown sugar also works in a pinch!
• Granulated sugar
• Pure vanilla extract
• Eggs
• Guinness—or any other unflavored stout beer if you don’t have a Guinness
• All-purpose flour—we always keep unbleached on hand at our house, but you can use the regular ‘ol AP and that works just fine!
• Unsweetened cocoa powder—NOT Dutch process!
• Kosher salt
• Cream cheese, softened
• Powdered sugar
• Half-and-half
• Green food dye—if you’re giving these colorful flair for St. Patrick’s Day

How to make Guinness Brownies

Prepare. Preheat the oven, and line a 9″x9″ square baking pan with parchment paper. Give it a spritz of cooking spray, too, before setting it aside.

Melt the chocolate. In a large bowl, combine the dark chocolate chunks and the butter. Heat the mixture in the microwave in 30 second increments, stirring after each session.

Add the rest of the wet brownie ingredients. Once all the chocolate is melted, measure in the sugars and vanilla, and stir until combined. Crack the eggs in a small bowl, and break the yolks using a fork. Pour the eggs into the chocolate and sugar mixture, stirring until combined.

Mix the dry brownie ingredients. In a medium-sized bowl, combine the flour, cocoa powder and salt.

Make the brownie batter. Sprinkle the dry ingredients into the wet ingredients, stirring, then pour in the Guinness. Stir until there are no longer lumps, and the mixture is well combined. Pour the brownie batter into the prepared baking dish, and sprinkle with the extra dark chocolate chunks.

Bake the Guinness Brownies. Bake for 40-50 minutes, or until the edges are firm and an inserted toothpick comes out clean. Let cool before adding the frosting.

Make the cream cheese frosting. In a large bowl, combine the frosting ingredients with a hand mixer. Mix until smooth.

Decorate and enjoy. Once the brownies have cooled, drizzle with the cream cheese frosting, and enjoy!

Frequently Asked Questions

Interested in baking these beauties at your house?

Scroll on down to learn how to make ’em!

How will you be celebrating St. Patrick’s Day this year?