Triple Chocolate Guinness Brownies — rich, fudgy brownies packed with dark cocoa, white chocolate chips, and semi-sweet chocolate. Easy to prepare and ready in roughly 30 minutes, these brownies combine all-purpose flour, dark cocoa powder, a pinch of salt, semi-sweet and white chocolate chips, butter, sugar, eggs, Guinness beer, and optional pecans. Serve warm with a scoop of vanilla ice cream for an indulgent dessert that’s perfect any day, especially for St. Patrick’s Day.
Guinness Brownies Recipe
These Triple Chocolate Guinness Brownies deliver intense chocolate flavor thanks to three different chocolates: dark cocoa powder in the batter, white chocolate chips, and semi-sweet chips. The addition of Guinness gives the brownies depth and a moist, fudgy texture without making them taste like beer. The result is a decadent, slightly chewy brownie with a tender crumb — a favorite for anyone who enjoys bold chocolate desserts.
How to Make Guinness Chocolate Brownies
Making these brownies is straightforward and requires no special equipment. Preheat the oven to 350ºF and spray a 9×13-inch baking pan with cooking spray, lining it with parchment for easy removal. In a medium bowl whisk together the flour, dark cocoa powder, and salt, then set aside. Melt 1¼ cups of the semi-sweet chocolate, the white chocolate chips, and the butter together until smooth, either in the microwave at 50% power in short intervals or in a small saucepan over low heat.
In a large bowl, beat the sugar and eggs with a hand mixer until the mixture is light and fluffy, about three minutes. Add the melted chocolate and mix until just combined. Slowly add the dry ingredients and mix until incorporated, then whisk in the Guinness. Pour the batter into the prepared pan and sprinkle with the remaining semi-sweet chips and chopped pecans if using. Bake for 25–30 minutes, then remove and cool to room temperature before cutting into squares. Dust with powdered sugar if desired.
Helpful Tips & Frequently Asked Questions
- I top the brownies with chopped pecans, but you can omit them if you prefer no nuts.
- If you don’t want pecans, try peanuts or walnuts as substitutes.
- Chocolate can be melted in the microwave (low power in short bursts), on the stovetop in a small saucepan, or in a double boiler.
- You can halve the recipe and bake in a 9-inch pan if you need fewer servings.
- Any mix of chocolate chips works well: white, semi-sweet, milk, or dark chocolate.
- I used Hershey’s Special Dark cocoa powder; regular cocoa powder can be used instead.
- Do the brownies taste like beer? No — the beer enriches the chocolate flavor but is not detectable as beer.
- How long do brownies last? Cut brownies keep 1–2 days in an airtight container; uncut brownies last up to 4 days wrapped tightly.
- Can brownies be frozen? Yes. Cool completely, wrap tightly in plastic wrap and foil (preferably uncut), and freeze up to 3 months. Thaw before slicing.
- For a festive touch, top with green sprinkles for St. Paddy’s Day.
- For an extra-special finish, frost with an Irish cream buttercream or similar frosting.
Easy St. Patrick’s Day Dessert Recipe
This is one of our go-to brownie recipes and a hit for St. Patrick’s Day, but it’s equally at home at potlucks, parties, and game-day gatherings. We enjoy them slightly warm with vanilla ice cream. Even if you’re not a beer drinker, these brownies are likely to become a household favorite thanks to their fudgy texture and layered chocolate flavor.
Looking for more chocolate desserts? Try other brownie variations or chocolate cakes for more ways to enjoy rich, chocolatey treats.
Green Velvet Brownies with Cream Cheese Frosting
Green Velvet Brownies topped with cream cheese — a festive choice for St. Patrick’s Day or any celebration.
Bisquick Brownies
Simple, classic Bisquick Brownies — quick to make and always satisfying.
Irish Cream Brownies
Baileys Irish Cream Brownies — a boozy twist on boxed brownies, finished with a homemade Irish cream frosting.
German Chocolate Bundt Cake
A rich German Chocolate Bundt Cake with coconut-pecan topping — perfect for gatherings.
Triple Chocolate Guinness Brownies
Equipment
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Hand mixer
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Mixing bowls
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9×13-inch cake pan
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Parchment paper
Ingredients
- 1 cup all-purpose flour
- ¾ cup dark cocoa powder
- ¼ tsp salt
- 2¼ cups semi-sweet chocolate chips, divided
- ¾ cup white chocolate chips
- 6 Tbsp butter, at room temperature
- 1 cup sugar
- 4 large eggs
- 1¼ cups Guinness beer
- ½ cup chopped pecans (optional)
Instructions
- Preheat oven to 350ºF. Spray a 9×13-inch baking dish with cooking spray and line with parchment if desired.
- Whisk together the flour, dark cocoa powder, and salt in a bowl and set aside.
- Melt 1¼ cups of the semi-sweet chocolate, the white chocolate chips, and the butter together until smooth (microwave at 50% power in short intervals or melt gently on the stovetop).
- In a large bowl, beat the sugar and eggs with a hand mixer until light and fluffy, about 3 minutes. Add the melted chocolate and mix until just combined. Gradually add the flour mixture and mix until incorporated, then whisk in the Guinness.
- Pour the batter into the prepared pan and sprinkle with chopped pecans and the remaining 1 cup of semi-sweet chocolate chips.
- Bake 25–30 minutes. Remove from the oven, cool to room temperature, and cut into squares.
Notes
- Leave out nuts if preferred, or swap pecans for peanuts or walnuts.
- Store cut brownies in an airtight container for 1–2 days; uncut brownies wrapped tightly will keep up to 4 days.
- To freeze, cool completely, wrap tightly (preferably uncut), and freeze up to 3 months. Thaw before slicing.
- For a festive finish, add green sprinkles for St. Patrick’s Day or top with an Irish cream frosting for extra richness.
Nutritional information is provided by third-party sources and may not be verified. Use this recipe at your discretion.
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