Get ready for St. Patrick’s Day with these Guinness Brownies. The depth of flavor in the chocolate mixture is amazing and the recipe is so easy. Each bite is fudgy and yummy.
We love brownie recipes and Guinness Brownies are so tasty with decadent frosting. They aren’t overly sweet because of the Guinness and have a great flavor. I also love to make Raspberry Cheesecake Brownies and The Best Butterscotch Brownies Recipe.
This recipe makes a great dessert with Corned Beef for St. Patty’s Day. I have been making these brownies for at least 10 years and it’s super easy! You might also like Guinness Cupcakes.
You might also like to learn How to Make Box Brownies Better.
Table of contents
Why we love this recipe
- Perfect taste and texture.
- Easy to follow recipe.
- Basic ingredients.
Ingredients
- Vegetable Oil
- Guinness Stout Beer
- Granulated Sugar
- Vanilla Extract
- Salted Butter (melted and cooled)
- Large Eggs
- All Purpose Flour
- Cocoa Powder
Frosting
- Unsalted Butter (softened)
- Powdered Sugar
- Vanilla Extract
- Guinness Stout Beer
Step by step instructions
- Step 1. First, go ahead and preheat the oven to 350 degrees f. Then line a 9X9 baking pan with parchment paper and make sure that the paper over hangs the pan for easy removal of the brownies.
Step 2. Get out a large bowl, whisk together the vegetable oil, Guinness, sugar and vanilla extract.
Step 3. Next, add in the butter and eggs. Mix until well combined. In a separate bowl, stir together the flour and cocoa powder until combined.
Step 4. Then add the dry ingredients into the butter/oil mixture until just combined. Spread the batter into the baking dish. Bake for 35-38 minutes until a toothpick inserted into the center of the brownies comes out clean or with moist crumbs.
Step 5. Allow the brownies to cool completely at room temperature on a wire rack before topping them with the frosting.
Step 6. While the brownies cool, make the frosting. Beat the butter. I used a large mixing bowl of a stand mixer with a paddle attachment. Beat until light and fluffy (approximately 1 minute).
Step 7. Next, gradually add the powdered sugar. Combine on low speed until combined. Then add in the vanilla extract and Guinness beer. Continue to mix until the frosting is smooth. Then check the frosting consistency and gradually add in the last tablespoon of Guinness until the frosting is the consistency you prefer.
Step 8. Spread the frosting over the cooled brownies.
Step 9. Remove the brownies from the pan by lifting them up with the parchment paper. Slice the brownies into squares and then they are ready to serve and enjoy!
Storage
Refrigerate the leftovers in an airtight container up to 5-6 days.
FAQs
Yes, you can use any variety of Guinness Beer that you prefer.
The recipe is very easy to freeze and enjoy later. Allow to cool and place inside a freezer bag or container.
Freeze the brownies up to 3 months. Allow to thaw in the refrigerator overnight when ready to serve.
You do not have to use the frosting if desired. However, it really elevates the flavor of the recipe and makes it even better. I definitely recommend using the frosting.
More Easy Brownie Recipes
- Easy One Bowl Brownies
- Red Velvet Brownies
- Reese’s Pieces Brownies
- Slutty Brownies
- Deep Fried Brownies
- Lunch Lady Brownies
Make Guinness Chocolate Brownies for the best homemade brownies with Guinness flavor. Don’t forget to leave a comment and star rating.
Guinness Brownies
Ingredients
For the Brownies:
- 1/4 cup Vegetable Oil
- 3/4 cup Guinness Stout Beer
- 2 cups Granulated Sugar
- 1 teaspoon Vanilla Extract
- 1/4 cup Salted Butter melted and cooled
- 2 Large Eggs
- 1 cup All Purpose Flour
- 2/3 cup Cocoa Powder
For the Frosting:
- 1/2 cup Unsalted Butter softened
- 2 1/2 cups Powdered Sugar
- 1 teaspoon Vanilla Extract
- 2-3 Tablespoons Guinness Stout Beer
Instructions
For the Brownies:
- Preheat the oven to 350 degrees Fahrenheit and line a 9X9 baking dish with parchment paper and make sure that the paper over hangs the pan for easy removal of the brownies.
- In a large mixing bowl, stir together the vegetable oil, Guinness, sugar and vanilla extract.
- Add in the butter and eggs. Mix until well combined.
- In a separate bowl, stir together the flour and cocoa powder until well combined.
- Slowly add the dry ingredients into the butter/oil mixture until just combined.
- Pour the batter into the prepared pan into an even layer. Bake for 35-38 minutes until a toothpick inserted into the center of the brownies comes out clean.
- Let the brownies cool completely at room temperature before topping them with the frosting.
For the Frosting:
- Beat the butter in a large mixing bowl of a stand up mixer with a paddle attachment until light and fluffy (approximately 1 minute).
- Slowly add in the powdered sugar and mix on low speed until combined.
- Add in the vanilla extract and 2 tablespoons of the Guinness beer. Continue to mix until the frosting is smooth and fluffy (3-4 minutes). Then check the frosting consistency and gradually add in the last tablespoon of Guinness until the frosting is the consistency you prefer.
- Spread the frosting over the cooled brownies.
- Carefully remove the brownies from the pan by lifting them up with the parchment paper. Slice the brownies into squares and then they are ready to serve and enjoy!
