Guinness Chocolate Brownies are the ultimate indulgence for any chocolate lover. These brownies strike the perfect balance between cakey and fudgy, all while boasting the rich flavor of Guinness Stout beer. The addition of a smooth Guinness-infused ganache on top elevates these brownies to a new level of decadence. Whether you’re celebrating St. Patrick’s Day or simply craving something sweet, these brownies are sure to satisfy your sweet tooth.
Why You’ll Love This Guinness Chocolate Brownies
There are countless reasons to fall in love with these delicious Guinness brownies. First, the unique combination of chocolate and beer creates a depth of flavor that is truly unforgettable. Second, they are incredibly moist and rich, thanks to the combination of stout and chocolate. Third, these brownies are surprisingly easy to make, making them a perfect choice for both novice and seasoned bakers alike. Fourth, they can be customized with various toppings or served alongside ice cream for an extra treat. Fifth, the brownies are vegetarian-friendly, fitting a wide range of dietary needs. Finally, they make for a fantastic dessert that is sure to impress family and friends.

Ingredients for Guinness Chocolate Brownies
Gather these items:
- 1/4 cup vegetable oil
- 3/4 cup Guinness Stout beer
- 2 cups granulated sugar
- 1/2 tsp espresso powder (Optional enhances chocolate flavor)
- 1/2 tsp vanilla extract
- 1/4 tsp salt
- 1/4 cup unsalted butter melted
- 2 large eggs
- 1 cup all-purpose flour
- 2/3 cup Dutch-processed cocoa powder
- 5 oz semi-sweet chocolate chips
- 2 tbsp unsalted butter
- 2 tbsp Guinness Stout beer
- 1/4 cup powdered sugar
How to Make Guinness Chocolate Brownies Step-by-Step
- Step 1: Preheat oven to 350°F (180°C). Grease a 9×9 square baking pan and line it with parchment paper that sticks up over the sides.
- Step 2: In a large mixing bowl, combine the vegetable oil, Guinness, sugar, espresso powder, vanilla extract, and salt. Whisk until well combined.
- Step 3: Add the melted butter and whisk until well combined.
- Step 4: Whisk in the eggs until smooth and combined.
- Step 5: Sift in the flour and cocoa powder, then whisk gently until just combined.
- Step 6: Pour the batter into the prepared pan and spread evenly.
- Step 7: Bake for 30-35 minutes or until a toothpick inserted into the center comes out with a few moist crumbs. Allow to cool in the pan.
- Step 8: For the chocolate topping, place the chocolate chips, butter, and Guinness in a microwave-safe bowl. Microwave for 30 seconds, then whisk until smooth.
- Step 9: Add powdered sugar to the ganache and whisk until smooth and combined.
- Step 10: Pour the ganache over the cooled brownies and spread into an even layer.
- Step 11: Allow the brownies to cool completely, then use the parchment paper to lift them from the pan. Cut into bars.
Pro Tips for the Perfect Guinness Chocolate Brownies
Keep these in mind:
- Use high-quality cocoa powder for richer flavor.
- Don’t overmix the batter after adding flour, as this can lead to tougher brownies.
- Let the brownies cool completely before cutting for cleaner slices.

Best Ways to Serve Guinness Chocolate Brownies
Enjoy these brownies on their own or dress them up with a scoop of vanilla ice cream for an indulgent dessert. You can also serve them with a drizzle of chocolate sauce or a sprinkle of sea salt for an extra touch of flavor. These chocolate beer brownies also pair well with coffee or a glass of milk.
How to Store and Reheat Guinness Chocolate Brownies
To store your brownies, keep them in an airtight container at room temperature for up to four days. If you want to keep them longer, you can freeze them for up to three months. To reheat, simply microwave a brownie for about 15-20 seconds until warm.
Frequently Asked Questions About Guinness Chocolate Brownies
What’s the secret to perfect Guinness Chocolate Brownies?
The secret lies in the balance of moisture from the Guinness and the richness of the chocolate. Using quality ingredients and not overbaking helps achieve that fudgy texture.
Can I make Guinness Chocolate Brownies ahead of time?
Absolutely! You can make these brownies a day in advance. Just store them in an airtight container, and they will taste even better the next day.
How do I avoid common mistakes with Guinness Chocolate Brownies?
Avoid overmixing the batter after adding the flour, and be sure to check for doneness a few minutes before the baking time is up to prevent overbaking.
Variations of Guinness Chocolate Brownies You Can Try
Feel free to experiment! You can make vegan Guinness chocolate brownies by substituting eggs and butter with flax eggs and coconut oil. For a gluten-free version, use almond or gluten-free flour. You can also try adding nuts or swirling in caramel for a decadent twist.
For more recipes, check out our recipe collection or learn more about us. If you have any questions, feel free to contact us or read our privacy policy for more information.
Print
Guinness Chocolate Brownies: 16 Irresistible Treats
- Total Time: 45 minutes
- Yield: 16 brownies 1x
- Diet: Vegetarian
Description
Indulge in these rich, moist brownies with a perfect balance of cakey and fudgy texture, topped with a smooth Guinness-infused ganache.
Ingredients
- 1/4 cup vegetable oil
- 3/4 cup Guinness Stout beer
- 2 cups granulated sugar
- 1/2 tsp espresso powder
- 1/2 tsp vanilla extract
- 1/4 tsp salt
- 1/4 cup unsalted butter melted
- 2 large eggs
- 1 cup all-purpose flour
- 2/3 cup Dutch-processed cocoa powder
- 5 oz semi-sweet chocolate chips
- 2 tbsp unsalted butter
- 2 tbsp Guinness Stout beer
- 1/4 cup powdered sugar
Instructions
- Preheat oven to 350°F (180°C). Grease a 9×9 square baking pan and line it with parchment paper that sticks up over the sides.
- In a large mixing bowl, combine the vegetable oil, Guinness, sugar, espresso powder, vanilla extract, and salt. Whisk until well combined.
- Add the melted butter and whisk until well combined.
- Whisk in the eggs until smooth and combined.
- Sift in the flour and cocoa powder, then whisk gently until just combined.
- Pour the batter into the prepared pan and spread evenly.
- Bake for 30-35 minutes or until a toothpick inserted into the center comes out with a few moist crumbs. Allow to cool in the pan.
- For the chocolate topping, place the chocolate chips, butter, and Guinness in a microwave-safe bowl. Microwave for 30 seconds, then whisk until smooth.
- Add powdered sugar to the ganache and whisk until smooth and combined.
- Pour the ganache over the cooled brownies and spread into an even layer.
- Allow the brownies to cool completely, then use the parchment paper to lift them from the pan. Cut into bars.
Notes
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Category: Dessert
- Method: Baking
- Cuisine: Irish
Nutrition
- Serving Size: 1 brownie
- Calories: 387
- Sugar: 30 g
- Sodium: 200 mg
- Fat: 18.7 g
- Saturated Fat: 10 g
- Unsaturated Fat: 8.7 g
- Trans Fat: 0 g
- Carbohydrates: 53.7 g
- Fiber: 2 g
- Protein: 4.5 g
- Cholesterol: 50 mg
