Introduction
Let me tell you, the moment the scent of rich chocolate and fresh mint hits your nose, you know you’re in for a treat. That’s exactly what happens with these Irresistible St. Patrick’s Mint Chocolate Ice Cream Brownie Bars. The first time I baked these, I was instantly hooked—the kind of moment where you pause, take a deep breath, and just smile because you know you’re onto something truly special. You know what? When I was knee-high to a grasshopper, my grandma used to whip up something similar during March, but I never had this perfect combo of minty coolness and fudgy brownie bliss until years ago.
Honestly, my family couldn’t stop sneaking them off the cooling rack (and I can’t really blame them). These bars have become a staple for our St. Patrick’s Day celebrations, potlucks, and even random rainy weekends when comfort food feels like a necessity. They’re dangerously easy to make but give you pure, nostalgic comfort with every bite. Perfect for brightening up your Pinterest cookie board or as a sweet treat for your kids after school, these bars are definitely a keeper. After testing this recipe multiple times—in the name of research, of course—I can say this is one you’re going to want to bookmark.
Why You’ll Love This Recipe
Now, why exactly should this mint chocolate brownie bars recipe become your go-to? Well, I’ve put it through its paces, and here’s why it stands out:
- Quick & Easy: Comes together in under 40 minutes, perfect for busy weeknights or last-minute St. Patrick’s Day parties.
- Simple Ingredients: No fancy grocery trips needed; you probably have most of this in your pantry already.
- Perfect for Celebrations: Great for St. Patrick’s Day, family gatherings, or just impressing your friends with homemade goodness.
- Crowd-Pleaser: Kids and adults alike rave about the fudgy texture paired with that refreshing mint twist.
- Unbelievably Delicious: The combo of rich chocolate and cool mint is pure comfort food magic.
This recipe isn’t just another brownie bar. The trick is in layering creamy mint chocolate ice cream between two fudgy brownie layers, giving you a texture and flavor combo that’s next-level. Plus, I sneak in a touch of peppermint extract that makes all the difference—it’s like a mint chocolate chip sundae in bar form. You’ll close your eyes after the first bite, promise. It’s that kind of recipe that makes simple ingredients sing with soul-soothing satisfaction.
What Ingredients You Will Need
This recipe uses simple, wholesome ingredients to deliver bold flavor and satisfying texture without the fuss. Most are pantry staples, with just a few fresh additions to make it shine.
- For the Brownie Layers:
- 1 cup (226g) unsalted butter, melted (adds richness)
- 2 cups (400g) granulated sugar
- 4 large eggs, room temperature
- 1 teaspoon vanilla extract
- 1 cup (125g) all-purpose flour (swap for almond flour for gluten-free)
- ¾ cup (75g) unsweetened cocoa powder (I recommend Hershey’s for best deep chocolate flavor)
- ½ teaspoon salt
- ½ teaspoon baking powder
- For the Mint Chocolate Ice Cream Filling:
- 1 pint (473ml) mint chocolate chip ice cream, softened slightly for spreading (use dairy-free if preferred)
- For the Topping:
- ½ cup (90g) semi-sweet chocolate chips (Ghirardelli works wonders here)
- 1 teaspoon peppermint extract (adds fresh mint flavor)
Feel free to swap fresh mint leaves or mint extract depending on your minty preference. If you want to keep it vegan, try coconut oil instead of butter, and a plant-based ice cream. The key is to keep that fudgy brownie base balanced with creamy, minty sweetness.
Equipment Needed

- 9×13-inch (23×33 cm) baking pan – You can use a glass or metal pan; glass gives a slightly slower bake, so keep an eye.
- Mixing bowls – At least two, for dry and wet ingredients.
- Electric mixer or sturdy whisk – I use a handheld mixer for ease, but a whisk works fine if you have strong arms!
- Rubber spatula – For scraping the batter and spreading the ice cream layer evenly.
- Measuring cups and spoons – Precision matters for brownies.
- Microwave-safe bowl – To melt butter and chocolate chips safely.
Don’t fret if you don’t have a mixer; these brownies can be made by hand, just mix thoroughly. For budget-friendly options, any basic glass baking dish and a wooden spoon can do the trick just fine. Keeping your ice cream softened but not melted is key—so a quick trip from freezer to kitchen counter before assembly is your best friend.
Preparation Method
- Preheat your oven to 350°F (175°C). Grease your 9×13-inch (23×33 cm) baking pan with butter or non-stick spray.
- Mix the dry ingredients: In a medium bowl, sift together 1 cup (125g) all-purpose flour, ¾ cup (75g) cocoa powder, ½ teaspoon salt, and ½ teaspoon baking powder. Set aside.
- Prepare the wet ingredients: In a large bowl, whisk 1 cup (226g) melted unsalted butter with 2 cups (400g) granulated sugar until combined and slightly glossy, about 2-3 minutes.
- Add eggs and vanilla: Beat in 4 large eggs one at a time, mixing well after each addition. Stir in 1 teaspoon vanilla extract. The batter should look thick and glossy.
- Combine dry and wet: Gradually fold the dry ingredients into the wet mixture using a spatula, mixing just until no streaks remain. Don’t overmix—this keeps the brownies fudgy.
- Spread half the batter: Pour and spread half of the brownie batter evenly into the prepared baking pan. Smooth with your spatula to edges.
- Layer the ice cream: Scoop softened mint chocolate chip ice cream evenly over the brownie layer. Use the back of a spoon or spatula to spread it gently. It should be thick enough to hold but not runny.
- Top with remaining batter: Dollop and spread the rest of the brownie batter over the ice cream layer. It’s okay if it looks uneven; it bakes into rustic perfection.
- Bake: Place in the oven and bake for 35-40 minutes. Check at 35 minutes by inserting a toothpick into the top layer—it should come out with a few moist crumbs but no wet batter.
- Prepare the topping: While baking, melt ½ cup (90g) semi-sweet chocolate chips in a microwave-safe bowl in 30-second bursts, stirring between, until smooth. Stir in 1 teaspoon peppermint extract.
- Cool and add topping: When brownies are done, let them cool completely in the pan on a wire rack (about 1 hour). Once cooled, drizzle or spread the peppermint chocolate topping evenly over the bars.
- Chill before serving: Place the pan in the fridge for 30 minutes to set the topping and firm up the bars for clean slicing.
- Slice and serve: Cut into 12-16 bars, depending on size preference. Serve slightly chilled or at room temperature.
Pro tip: If your ice cream melts too fast during assembly, pop the pan back in the freezer for 15 minutes before adding the top brownie layer. That little trick saves you from a gooey mess. Also, don’t worry if your topping cracks a tiny bit after chilling—it just adds to the homemade charm.
Cooking Tips & Techniques
Because, honestly, brownies can be tricky, here are some tips from my kitchen experience that’ll save you headaches:
- Don’t overmix the batter: Overworking can make brownies cakey instead of fudgy. Fold in dry ingredients gently.
- Softened ice cream is key: You want it spreadable but not melted to avoid mixing with the brownie batter.
- Keep an eye on baking time: Ovens vary, so start checking at 35 minutes. Too long and the brownies dry out, too short and they’re underbaked.
- Tweaking peppermint flavor: Peppermint extract is powerful—start with less and add more to taste in your melted chocolate.
- Use room temperature eggs: They incorporate easier and help your batter come together smoother.
- Multitasking tip: Melt your chocolate topping while brownies bake, so you’re ready to drizzle as soon as they cool.
From my kitchen mishaps (yes, I’ve baked these with frozen ice cream before—don’t do it!), I learned that patience with cooling is everything. Slice too soon, and you’ll have crumbly bars. Let them rest, and they hold together beautifully.
Variations & Adaptations
Want to mix things up? Here are some ways to customize this recipe:
- Dairy-Free Version: Use vegan butter, dairy-free mint chocolate chip ice cream, and plant-based chocolate chips for a fully vegan treat.
- Seasonal Twist: Swap the mint ice cream for vanilla or strawberry ice cream and add fresh berries on top for a spring-appropriate version.
- Nutty Delight: Add ½ cup chopped walnuts or pecans to the brownie batter for extra crunch and flavor.
- Spicy Mint: Add a pinch of cayenne pepper to the brownie batter for a subtle heat that pairs surprisingly well with mint.
- Alcohol-Infused: Stir 1 tablespoon of Irish cream liqueur into the ice cream layer for an adult-only twist perfect for St. Patrick’s Day.
I once tried adding crushed peppermint candies on the topping after drizzling the chocolate, and the texture boost was fantastic—definitely something I recommend if you like a little crunch.
Serving & Storage Suggestions
These mint chocolate brownie bars are best served slightly chilled or at room temperature. They pair wonderfully with a cup of hot coffee or a cold glass of milk—perfect for cozy afternoons. For St. Patrick’s Day parties, cut them into small squares for easy finger food.
Store leftovers in an airtight container in the refrigerator for up to 4 days. They keep well frozen too—just wrap bars tightly in plastic wrap and place in a freezer-safe container for up to 2 months. Thaw overnight in the fridge before serving.
When reheating, warm briefly in the microwave (15-20 seconds) to bring back that gooey chocolate goodness without melting the ice cream layer too much. Over time, the flavors meld even better, making these bars a treat you can prep ahead for gatherings.
Nutritional Information & Benefits
These bars are a delicious indulgence, so enjoy in moderation. Each serving (about 1/12 of the pan) roughly contains:
| Calories | 350-400 kcal |
|---|---|
| Fat | 20g |
| Carbohydrates | 45g |
| Protein | 4g |
Key ingredients like cocoa powder provide antioxidants, and mint adds a refreshing breath of fresh flavor with digestive benefits. For those watching gluten, swapping in almond flour or a gluten-free blend works well to keep the bars accessible. Just note that the ice cream and chocolate chips may contain dairy and soy allergens, so choose brands accordingly if you have dietary restrictions.
Conclusion
So, there you have it—an easy, homemade St. Patrick’s Mint Chocolate Brownie Bars recipe that’s sure to become a family favorite. Whether you’re making them for a festive celebration or a sweet weekend treat, these bars combine fudgy chocolate, refreshing mint, and creamy ice cream in a way that’s pure magic. Customize to your liking, play with flavors, and most importantly, enjoy every bite.
I love this recipe because it brings people together, creates smiles, and feels like a warm hug on a plate. Don’t be shy—try it out, share your tweaks, and let me know how it turns out! Your next favorite dessert is just a bake away.
FAQs
Can I make these bars without the ice cream layer?
Absolutely! Just bake the brownie batter all at once for classic mint brownies. You can fold in a teaspoon of peppermint extract for flavor.
What if I don’t have peppermint extract?
Fresh mint leaves finely chopped can work, or you can omit it for a subtle mint flavor from the ice cream alone.
Can I prepare these bars ahead of time?
Yes! Assemble and bake as directed, then store covered in the fridge. They taste even better after a few hours when flavors meld.
Is there a way to make this recipe gluten-free?
Swap all-purpose flour for a gluten-free baking blend or almond flour, and check that your ice cream and chocolate chips are gluten-free certified.
How do I stop the ice cream from melting during assembly?
Let it soften just enough to spread easily, but keep it chilled. Work quickly and return the pan to the freezer if needed before adding the final brownie layer.
Pin This Recipe!

Irresistible St. Patrick’s Mint Chocolate Brownie Bars
These mint chocolate brownie bars combine fudgy chocolate brownies with a creamy mint chocolate ice cream layer, topped with a peppermint chocolate drizzle. Perfect for St. Patrick’s Day celebrations or any cozy occasion.
- Prep Time: 15 minutes
- Cook Time: 35-40 minutes
- Total Time: 50-55 minutes
- Yield: 12-16 bars 1x
- Category: Dessert
- Cuisine: American
Ingredients
- 1 cup (226g) unsalted butter, melted
- 2 cups (400g) granulated sugar
- 4 large eggs, room temperature
- 1 teaspoon vanilla extract
- 1 cup (125g) all-purpose flour (or almond flour for gluten-free)
- ¾ cup (75g) unsweetened cocoa powder
- ½ teaspoon salt
- ½ teaspoon baking powder
- 1 pint (473ml) mint chocolate chip ice cream, softened
- ½ cup (90g) semi-sweet chocolate chips
- 1 teaspoon peppermint extract
Instructions
- Preheat your oven to 350°F (175°C). Grease a 9×13-inch baking pan with butter or non-stick spray.
- In a medium bowl, sift together flour, cocoa powder, salt, and baking powder. Set aside.
- In a large bowl, whisk melted butter with granulated sugar until combined and slightly glossy, about 2-3 minutes.
- Beat in eggs one at a time, mixing well after each addition. Stir in vanilla extract.
- Gradually fold dry ingredients into wet mixture using a spatula, mixing just until no streaks remain. Do not overmix.
- Pour and spread half of the brownie batter evenly into the prepared pan.
- Scoop softened mint chocolate chip ice cream evenly over the brownie layer and spread gently.
- Dollop and spread the remaining brownie batter over the ice cream layer; it can look uneven.
- Bake for 35-40 minutes. Check at 35 minutes with a toothpick; it should come out with a few moist crumbs but no wet batter.
- While baking, melt chocolate chips in a microwave-safe bowl in 30-second bursts, stirring until smooth. Stir in peppermint extract.
- Let brownies cool completely in the pan on a wire rack (about 1 hour).
- Drizzle or spread the peppermint chocolate topping evenly over the cooled bars.
- Chill the pan in the refrigerator for 30 minutes to set the topping and firm up the bars.
- Cut into 12-16 bars and serve slightly chilled or at room temperature.
Notes
Do not overmix the batter to keep brownies fudgy. Use softened but not melted ice cream for easy spreading. Check baking time starting at 35 minutes to avoid drying out. If ice cream melts too fast during assembly, chill the pan in the freezer for 15 minutes before adding the top brownie layer. Let bars cool completely before adding topping and slicing for best results.
Nutrition
- Serving Size: 1 bar (1/12 of pan)
- Calories: 350400
- Fat: 20
- Carbohydrates: 45
- Protein: 4
Keywords: mint chocolate brownie bars, St. Patrick’s Day dessert, fudgy brownies, mint chocolate ice cream, homemade brownie bars


