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Baileys Brownies are the grown up chocolate fix that starts sneaky easy, a fudge box mix spiked with Irish cream, and finishes like a bakery flex, crowned with a whipped Baileys ganache so light it eats like chocolate mousse. I brought a pan to a St. Patrick’s Day potluck and came home with requests for three more. If my cosmic brownies prove a box mix can dream big, these prove it can drink fancy too.
Box mix base, two real techniques, and nobody will believe either part.
Baileys Brownies Quick Look
- 🕒 Prep Time: 15 minutes
- 🌡️ Cook Time: 25 minutes
- ⏳ Total Time: 2 hours
- 🍽️ Serving: 15 brownies
- ⚡ Calories: 414kcal
- 🌶️ Flavor Profile: Deep fudge chocolate with creamy, boozy Irish cream warmth
- ✋ Difficulty: Easy, the ganache just needs patience while it firms
Quick Answer
Mix a box of fudge brownie mix with eggs, vegetable oil, and 3 tablespoons of Baileys, bake in a 9×13 pan at 350 degrees for 22 to 25 minutes, and cool completely. For the ganache, heat 4 ounces of Baileys with 2 ounces of heavy cream to a simmer, pour it over 12 ounces of chocolate chips, rest 5 minutes, and whisk smooth. Let the ganache firm up, whip it fluffy for about 3 minutes, spread it over the brownies, cut, and finish with melted dark chocolate drizzle.
Jump to:
- Baileys Brownies Quick Look
- Quick Answer
- Why This Recipe Works
- Why You’ll Love This Recipe
- Key Ingredients
- Variations and Substitutions
- How to Make Baileys Brownies
- Recipe Tips & Tricks
- Serving Ideas and Suggestions
- Baileys Brownies FAQs
- Other Recommended Brownies and Bars
- Bailey’s Brownies with Irish Cream Ganache
Why This Recipe Works
Click to see the technique science
- Baileys replaces the water in the mix. Swapping the box mix liquid for Irish cream bakes the flavor into the brownie itself instead of just sitting on top.
- The ganache is a real 2 to 1 style ratio. Twelve ounces of chocolate to six ounces of combined Baileys and cream sets firm enough to whip, which is what makes the frosting pipeable and fluffy.
- Resting the hot cream does the melting. Covering the bowl for 5 minutes lets the residual heat melt every chip evenly, so the ganache whisks glossy with no grainy bits.
- Whipping transforms the texture. Three minutes with a mixer aerates the firm ganache into a light, mousse like frosting that spreads in dramatic swoops.
- Cooling the brownies completely is non negotiable. Whipped ganache on a warm slab melts into a puddle, a fully cool base keeps that thick bakery frosting layer.
Why You’ll Love This Recipe
- Real Baileys in both the brownie and the frosting, this is not a subtle nod, it is the whole theme.
- The whipped ganache looks and tastes like a chocolate mousse frosting with a fraction of the effort.
- They start from a box mix but finish like a bakery case, the same upgrade energy as my cosmic brownies.
Key Ingredients
A box mix and a bar cart staple do most of the heavy lifting.
- Fudge brownie mix: One box, the reliable fudgy base that lets the Baileys shine.
- Baileys Irish Cream: Three tablespoons in the batter and 4 ounces in the ganache.
- Semi sweet chocolate chips: Twelve ounces become the whipped ganache frosting.
- Heavy cream: Two ounces round out the ganache so it whips silky instead of stiff.
- Dark chocolate melting wafers: Melted for the optional drizzle that makes them look bakery bought.
See recipe card for exact quantities.
Variations and Substitutions
The Irish cream formula bends any direction you like.
- Use salted caramel or chocolate flavored Baileys for a different accent in the ganache.
- Add a teaspoon of espresso powder to the batter to deepen the chocolate.
- Make them from your favorite scratch brownie recipe, swap 3 tablespoons of the liquid for Baileys.
- More mint than malt? My mint brownies run the same fudgy play with creme de menthe vibes.
- Skip the whip and pour the ganache over the slab warm for a shiny mirror glaze finish instead.
How to Make Baileys Brownies
- Preheat the oven to 350 degrees and line a 9×13 baking dish with parchment. Place the brownie mix, Baileys, vegetable oil, and eggs in a large bowl.
- Mix the batter per the directions on the back of the box.
- Smooth the batter into the prepared baking dish.
- Bake 22 to 25 minutes, until a toothpick inserted 2 inches from the edge comes out with only moist crumbs. Cool completely in the dish.
- While the brownies bake, place the chocolate chips in a heatproof bowl. Heat the Baileys and heavy cream in a small pot over medium low until it just simmers, then pour it over the chips and cover the bowl for 5 minutes.
- Whisk the ganache until completely smooth and glossy.
- Let the ganache firm up at room temperature, or about 1 hour in the refrigerator, then whip it with a mixer until light and fluffy, about 3 minutes.
- Lift the cooled brownies out with the parchment and spread the whipped ganache evenly over the top.
- Cut into 15 squares, drizzle with the melted dark chocolate, and serve once the drizzle sets.
Recipe Tips & Tricks
- Cool the brownies fully before frosting. Even slightly warm brownies will melt the whipped ganache into a glaze.
- Do not rush the ganache to firm. It whips best at a soft peanut butter consistency, too cold and it breaks, too warm and it slumps.
- Whip just until fluffy. Over whipping can turn the ganache grainy, three minutes is usually the sweet spot.
- Use the parchment sling. Lifting the slab out before frosting and cutting gives clean bakery edges.
- Warm the knife for cutting. Hot water, wipe dry, cut, repeat, the frosting layer stays picture perfect.
- Check doneness at the edge, not the center. A toothpick 2 inches from the side with moist crumbs means fudgy middle squares.
Serving Ideas and Suggestions
Serve the baileys brownies in small squares with coffee, the Irish cream ganache basically demands an Irish coffee pairing, or plate them with a scoop of my cookie dough ice cream.
For a St. Patrick’s Day spread, stack them on a platter beside my mint brownies, one boozy, one minty, everyone finds a lane.
Dress them up for a dinner party with a swirl of my chocolate whipped cream and a few chocolate curls on top.
Store baileys brownies covered in the refrigerator up to 5 days, the ganache stays freshest chilled, and let squares stand 15 minutes before serving so the frosting softens back to mousse texture. They freeze up to 2 months, thaw overnight in the fridge and add the drizzle after thawing if making far ahead.
Baileys Brownies FAQs
Baileys brownies are fudge brownies made with Irish cream in the batter, topped with a whipped Baileys chocolate ganache frosting and a dark chocolate drizzle. This version starts from a box mix, swaps some liquid for Baileys, and turns the rest of the bottle into the fluffiest boozy frosting you have ever spread.
Most of the alcohol in the batter bakes off in the oven, leaving mainly the creamy caramel vanilla flavor. The whipped ganache is not cooked though, so the 4 ounces of Baileys in the frosting keeps its gentle kick. These are best kept on the adult end of the dessert table.
Temperature is everything. The ganache must firm to a soft, spreadable peanut butter consistency first, whip it too warm and it stays soupy, too cold from a long fridge stint and it can seize or break. Let refrigerated ganache warm on the counter 15 minutes, then whip, it should triple in lightness within 3 minutes.
Absolutely. Use your favorite 9×13 fudge brownie recipe and replace 3 tablespoons of the milk or water with Baileys. Fudgy, dense recipes work better than cakey ones as the base for the heavy whipped ganache layer. The frosting and drizzle steps stay exactly the same.
Because of the whipped ganache, store them covered in the refrigerator, where they keep up to 5 days. Let squares sit out about 15 minutes before serving so the frosting softens from firm to mousse like. They also freeze beautifully up to 2 months, thaw them overnight in the fridge.
Original Irish Cream is the classic and pairs with everything chocolate, but salted caramel Baileys is incredible in the ganache, and the chocolate or espresso creme varieties deepen the cocoa flavor. Any cream liqueur works at the same measurements, including homemade Irish cream.
Made these Baileys Brownies? Leave a comment and a star rating below, and tell me if the ganache made it onto the brownies before the spoon got to it!
Cupcake person instead? My baileys cupcakes soak the Irish cream right into the crumb.
Keep the frosted theme going with my strawberry topped frosted brownies.
Bailey’s Brownies with Irish Cream Ganache
Ingredients
For the brownies:
- 1 box fudge brownie mix or your favorite brownie mix
- 3 tablespoons Bailey's Irish Cream
- 1/2 cup vegetable oil
- 2 large eggs
For the Bailey's ganache:
- 12 ounces semi-sweet chocolate chips
- 4 ounces Bailey's Irish Cream
- 2 ounces heavy cream
- 2 tablespoons melted dark chocolate melting wafers to serve, optional
Instructions
- Preheat the oven to 350°F. Line a 9×13 baking dish with parchment paper or spray with baking spray and set aside.
- Place the fudge brownie mix, Irish cream, vegetable oil, and the eggs into a large bowl. Mix the ingredients per the directions on the back of the box.1 box fudge brownie mix, 3 tablespoons Bailey's Irish Cream, 1/2 cup vegetable oil, 2 large eggs
- Smooth the brownie batter into the prepared baking dish.
- Bake for 22-25 minutes or until a toothpick inserted 2 inches from the side of the baking dish comes out mostly clean, a few crumbs are okay but if there is any wet batter, they need to be baked longer. Or bake per the directions on the back of the box. Let them cool completely in the baking dish.
- While the brownies are baking, make the ganache by placing the semi-sweet chocolate chips into a heat-proof bowl, and setting them aside.12 ounces semi-sweet chocolate chips
- Place the Baileys and heavy cream into a small pot on the stove over medium-low heat, occasionally stirring until it just comes to a simmer. Pour the mixture over the chocolate chips and cover the bowl. Let it sit for 5 minutes.4 ounces Bailey's Irish Cream, 2 ounces heavy cream
- Whisk the ganache until smooth. Let the ganache sit at room temperature until it is firm. You can also place it in the fridge for about 1 hour until firm.
- Place the firm ganache into a large bowl with an electric hand mixer or the body of a stand mixer with the whisk attachment and whip until it becomes light and fluffy, about 3 minutes.
- Lift the brownies out of the baking dish with the parchment paper and spread the ganache evenly over the brownies.
- Cut the frosted brownies into servings, then drizzle with the optional melted dark chocolate and serve once the chocolate is set.2 tablespoons melted dark chocolate melting wafers
Notes
- This makes a large batch, but you can easily double it to feed more or halve the recipe as needed. If halving the recipe, add it to a 9×9 or 8×8 baking dish, and cook time may vary.
- Tons of custom options, see my tips above on that.
- Store-bought brownie mix is used for this recipe, but you can use your favorite homemade brownies instead.
- The dark chocolate drizzle is optional.
- This keep and freeze well, see my tips above on how to store.
- I do not recommend serving to anyone but adults of drinking age.
Nutrition
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