Best Brownies EVER: Irish Car Bomb Brownies

Best Brownies EVER: Irish Car Bomb Brownies is a medium Irish recipe that serves 8. 350 calories per serving. Recipe by Marks Irish Kitchen on YouTube.

Prep: 35 min | Cook: 37 min | Total: 1 hr 27 min

Cost: $13.82 total, $1.73 per serving

Ingredients

  • 90 g All-Purpose Flour (sifted)
  • 200 g Granulated Sugar
  • 75 g Unsweetened Cocoa Powder
  • 2 g Baking Powder
  • 1 g Salt
  • 100 g Brown Sugar
  • 70 g Dark Chocolate (70% cocoa) (for brownie batter, chopped)
  • 85 g Unsalted Butter (melted)
  • 80 ml Guinness Stout
  • 5 ml Vanilla Extract
  • 2 Eggs (large, lightly beaten)
  • 90 g Dark Chocolate (70% cocoa) (additional, chopped)
  • 140 g Dark Chocolate (70% cocoa) (for ganache, chopped)
  • 28 g Salted Butter (melted)
  • 30 g Powdered Sugar
  • 30 ml Jameson Irish Whiskey
  • 113 g Unsalted Butter (softened, for buttercream)
  • 180 g Icing Sugar
  • 45 ml Baileys Irish Cream
  • 5 ml Milk (optional, to thin buttercream)
  • 10 g Butter (for greasing baking tray)

Instructions

  1. Combine Dry Ingredients

    In a large mixing bowl whisk together the flour, granulated sugar, cocoa powder, baking powder, and salt until evenly combined.

    Time: PT5M

  2. Melt Chocolate and Butter

    Place 70 g dark chocolate and 85 g butter in a saucepan over low heat, stirring until smooth. Remove from heat and stir in Guinness, vanilla extract, and the two lightly beaten eggs.

    Time: PT5M

  3. Combine Wet and Dry, Add Extra Chocolate

    Pour the wet mixture into the dry ingredients, add the remaining 90 g chopped dark chocolate, and stir just until the batter is uniform. Do not over‑mix.

    Time: PT5M

  4. Bake the Brownie Base

    Grease the baking tray with a thin layer of butter, pour in the batter and spread evenly. Bake in a pre‑heated oven at 180°C for 20‑22 minutes, or until a toothpick inserted in the centre comes out with a few moist crumbs.

    Time: PT22M

    Temperature: 180°C

  5. Prepare Jameson Ganache

    While the brownies bake, melt 140 g dark chocolate in a saucepan over low heat. Remove from heat and whisk in melted salted butter, powdered sugar, and Jameson whiskey until glossy.

    Time: PT5M

  6. Cool Brownies

    Remove the baked brownies from the oven and let them cool on a rack for about 15 minutes until firm enough to spread ganache.

    Time: PT15M

  7. Spread Jameson Ganache

    Pour the warm ganache over the cooled brownies, spreading evenly with an offset spatula. Allow the ganache to set for 5‑10 minutes.

    Time: PT10M

  8. Make Baileys Buttercream

    In a clean bowl, beat 113 g softened unsalted butter for about 5 minutes until pale and fluffy. Gradually add the icing sugar, then whisk in Baileys Irish Cream, vanilla extract, and a teaspoon of milk if needed to reach a spreadable consistency.

    Time: PT10M

  9. Finish and Serve

    Spread the Baileys buttercream over the set ganache layer, smoothing the top. Let the assembled brownies sit for another 5 minutes before cutting into squares.

    Time: PT5M

Nutrition Facts

Calories
350
Protein
4 g
Carbohydrates
45 g
Fat
18 g
Fiber
3 g

Dietary info: Vegetarian, Contains alcohol, Not vegan, Contains gluten

Allergens: Dairy, Eggs, Gluten, Soy (cocoa processing), Alcohol

Last updated: April 16, 2026

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Best Brownies EVER: Irish Car Bomb Brownies

Recipe by Marks Irish Kitchen

Decadent Irish Car Bomb Brownies combine a fudgy chocolate brownie infused with Guinness, a rich Jameson whiskey ganache, and a silky Baileys buttercream frosting. Perfect for celebrations or a indulgent treat, these layered brownies bring the classic Irish cocktail to dessert form.

MediumIrishServes 8

Shop all ingredients on Amazon in one click • Printable PDF with shopping checklist

Source Video
40m
Prep
42m
Cook
10m
Cleanup
1h 32m
Total

Cost Breakdown

$13.82
Total cost
$1.73
Per serving

Critical Success Points

  • Do not over‑mix the batter after adding the chocolate chunks.
  • Bake until a toothpick shows only a few moist crumbs to keep the brownies fudgy.
  • Allow the brownies to cool sufficiently before spreading the ganache to avoid melting.
  • Whisk the buttercream until light and airy for a smooth finish.

Safety Warnings

  • Handle hot melted chocolate and butter with care to avoid burns.
  • Alcohol can ignite if exposed to open flame; keep away from stovetop burners.
  • Use oven mitts when removing the tray from the oven.

Frequently Asked Questions

Everything you need to know about this recipe

Q

What is the cultural significance and history of Irish Car Bomb brownies in Irish cuisine?

A

Irish Car Bomb brownies are a modern dessert twist that fuses the classic Irish Car Bomb cocktail—Guinness, Jameson whiskey, and Baileys—with a rich chocolate brownie. While not a traditional Irish sweet, they reflect Ireland’s love for stout and whiskey, turning a popular party drink into an indulgent treat for celebrations.

cultural
Q

What are the traditional regional variations of Irish Car Bomb brownies within Ireland?

A

Because the dessert is contemporary, variations are limited, but some Irish bakers substitute the stout with a local craft ale, use Irish cream liqueur brands other than Baileys, or add a layer of Irish oat crumble for texture. The core concept—stout‑infused chocolate with whiskey ganache—remains the same.

cultural
Q

How is an authentic Irish Car Bomb brownie traditionally served in Ireland?

A

In Irish pubs and home gatherings, the brownies are typically cut into bite‑size squares, dusted lightly with cocoa powder, and served at room temperature alongside a pint of stout or a glass of Irish coffee. They are often enjoyed as a dessert after a hearty meal or as a festive snack.

cultural
Q

What occasions or celebrations are Irish Car Bomb brownies traditionally associated with in Irish culture?

A

These brownies are popular at St. Patrick’s Day parties, birthdays, and informal gatherings where Irish drinks are served. Their boozy nature makes them a fun centerpiece for adult celebrations, especially when paired with other Irish staples like soda bread or cheese boards.

cultural
Q

What makes Irish Car Bomb brownies special or unique in Irish dessert cuisine?

A

The combination of Guinness‑infused brownie, Jameson whiskey ganache, and Baileys buttercream creates a layered flavor profile that balances bitter chocolate, creamy liqueur, and a subtle maltiness from the stout—something rarely found in traditional Irish desserts, which are usually fruit‑based or dairy‑rich.

cultural
Q

What are the most common mistakes to avoid when making Irish Car Bomb brownies at home?

A

Common errors include over‑baking the brownies, which makes them dry; adding the ganache before the brownies are fully cooled, causing it to melt; and over‑whipping the buttercream, which can become grainy. Follow the timing cues in the recipe and let each layer set before moving on.

technical
Q

Why does this Irish Car Bomb brownie recipe use Guinness stout instead of regular beer?

A

Guinness provides a deep, roasted malt flavor and a creamy mouthfeel that complements dark chocolate, whereas regular lagers lack the richness needed to impart the characteristic “Car Bomb” taste. The stout also adds a subtle bitterness that balances the sweetness of the sugar and Baileys.

technical
Q

Can I make Irish Car Bomb brownies ahead of time and how should I store them?

A

Yes. Bake the brownie base a day ahead, keep it wrapped in plastic, and store at room temperature. Prepare the ganache and buttercream separately; refrigerate the ganache for up to 2 days and the buttercream for 24 hours. Assemble just before serving, or store the fully assembled brownies in the refrigerator for up to 4 days.

technical
Q

What texture and appearance should I look for when the Irish Car Bomb brownies are done?

A

The brownie layer should be dense and fudgy with a shiny top, and a toothpick inserted should come out with a few moist crumbs. The ganache layer should be glossy and set but still slightly soft to the touch, while the buttercream should be smooth, creamy, and hold its shape without sliding.

technical
Q

What does the YouTube channel Marks Irish Kitchen specialize in?

A

The YouTube channel Marks Irish Kitchen focuses on modern Irish home cooking, showcasing traditional recipes with contemporary twists, step‑by‑step tutorials, and tips for using Irish ingredients like stout, whiskey, and dairy products.

channel
Q

How does the YouTube channel Marks Irish Kitchen's approach to Irish cooking differ from other Irish cooking channels?

A

Marks Irish Kitchen blends classic Irish flavors with bold, dessert‑centric concepts and often incorporates popular Irish beverages into sweet dishes. The channel emphasizes clear visual instructions, precise measurements, and practical home‑cook tips, setting it apart from channels that focus solely on savory or heritage dishes.

channel

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