Iced Sheetpan Peppermint Brownies
Dive into these irresistible peppermint brownies! Rich, fudgy, and topped with fluffy icing, they’re the perfect treat for any occasion!
These peppermint brownies are the ultimate showstopper for your dessert table. Imagine sinking your teeth into a decadent treat that’s rich, fudgy, and chewy all at once. These brownies boast a deep chocolate flavor, a moist, dense center, and that coveted crackly top. Plus, those subtly chewy edges? Total bliss!
To achieve brownie perfection, using high-quality ingredients is key. Feel free to get creative with add-ins like crunchy nuts or melty chocolate chunks for even more delicious layers of flavor and texture. With just the right amount of sweetness, these brownies cater to every chocolate lover’s sweet tooth!

Ingredients in Peppermint Brownies
- Unsalted butter
- Granulated sugar
- Large eggs (cold from the fridge)
- Ripe banana (mashed)
- Pure vanilla extract
- Avocado oil
- Unsweetened cocoa powder
- All-purpose flour
- Baking soda
- Cornstarch
- Salt
- Chocolate chips (mini or regular)
For the Icing
- Unsalted butter (room temperature)
- Powdered sugar
- Whole milk or heavy cream
- Pure vanilla extract
- Peppermint extract
- A pinch of salt
- Pink food coloring (optional)
- Cocoa powder (optional)
Instructions for Peppermint Brownies
- Preheat and Prepare: Preheat your oven and line a half-sheet baking pan with parchment paper.
- Melt and Mix: In a microwave-safe bowl, combine sugar and butter. Microwave until melted, whisking until well combined.
- Add the Good Stuff: Mix in eggs, mashed banana, and vanilla extract, whisking until everything’s nicely blended. Stir in oil and cocoa powder until fully combined.
- Fold in the Dry Ingredients: Using a rubber spatula, gently fold in flour, baking soda, cornstarch, and salt until just combined. Don’t overmix!
- Chocolate Chip Magic: Toss chocolate chips in a tiny bit of flour (this helps them stay suspended) and fold them into the batter gently.
- Spread and Bake: Spread the batter evenly in your prepared baking sheet. Bake until a toothpick inserted into the center comes out with a few moist crumbs. Don’t overbake these beauties!
- Cool and Ice: Let the brownies cool completely before icing.
For the Icing:
- In a stand mixer with the paddle attachment (or using a hand mixer), beat the butter until creamy.
- Gradually add powdered sugar, mixing until smooth.
- Add milk (or cream), peppermint extract, and a pinch of salt. Mix until creamy and luscious.
- Frost your cooled brownies and get ready for the compliments!
Recipe Substitutions And Notes
- These peppermint brownies are super versatile! Top them off with a soft, fluffy icing and a festive medley of toppings—think Andes mints, crushed peppermint candies, or Ghirardelli peppermint bark. Not only do they taste fantastic, but they also look absolutely stunning!
Georgie’s Tips and Tricks for the Perfect Brownie
If you’ve ever had your chocolate chips sink to the bottom, you know it can be a total bummer. Here are some handy tips to keep your chocolate chips suspended in brownie perfection:
How to Know When Your Brownies Are Done
Brownies are usually baked at around 325°F to 350°F. Here’s how to check for doneness:
- Toothpick Test: Insert a toothpick into the center. A few moist crumbs? Perfect! Clean? They might be overbaked.
- Set Edges: The edges should be set and slightly pulled away from the pan.
- Slight Jiggle: A little jiggle in the center is fine, especially if you love fudgy brownies.
- Shiny Top: The surface should be shiny and smooth—dry or cracked might mean they’re overbaked.
Remember, it’s better to underbake a tad since brownies will continue to set after they come out of the oven. If they end up too gooey for your liking, you can always pop them back in for a quick bake!
Get ready to dive into a plate of these amazing peppermint brownies—they’re sure to become your new go-to treat for any gathering! With their festive flair and mouthwatering flavor, they’re perfect for holidays, parties, or just a cozy night in. Happy baking, and enjoy every decadent bite!
Frequently Asked Questions
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Iced Sheetpan Peppermint Brownies
Equipment
- Hand mixer
- Measuring Cups and Spoons
- Measuring Cups and Spoons
Ingredients
Brownies
- 15 tbsp unsalted butter
- 2.5 cups granulated sugar
- 4 large eggs ((cold from the fridge))
- 1 banana ((ripe))
- 2 tsp vanilla extract
- ⅔ cup avocado oil
- 1¼ cup unsweetened cocoa powder
- 1 cup all-purpose flour
- ¼ tsp baking soda
- 2 tbsp cornstarch
- ½ tsp salt
- 1½ cups chocolate chips
Icing
- 1 cup unsalted butter (room temperature)
- 2 cups powdered sugar
- 6 tbsp whole milk (or heavy cream)
- 1 tsp vanilla extract
- 1 tsp peppermint extract
- 1 pinch of salt
- 3 drops of food coloring (omit for chocolate icing)
- 3 tbsp cocoa (omit for pink icing)
Instructions
- Preheat oven to 325℉ and line a half sheet baking sheet with parchment paper.
- Add sugar and butter to a microwave safe dish and cook in microwave until butter is melted. Start with 30 seconds and add 15 seconds until butter is melted. It should take about 1 minute.
- Whisk sugar and melted butter until well combined.
- Add eggs, mashed banana and vanilla and whisk to combine.
- Add the oil and cocoa powder and whisk until combined.
- Using a rubber spatula, fold in the flour, baking soda, cornstarch, and salt until combined.
- Toss chocolate chips in a small amount of flour and add to the batter.
- Spread the batter evenly in your baking sheet. Bake for 25 minutes or until a toothpick inserted in the center comes out clean. Be careful to not overcook the brownies (They are done between 175-185℉ read with a digital thermometer).
- Let the brownies cool before icing.
To make the icing
- In the bowl of the stand mixer fitted with the paddle attachment (or using a hand mixer and a medium sized mixing bowl), beat the butter until creamy.
- Add powdered sugar, one half cup at a time, until blended well.
- Add milk (or cream), along with peppermint extract and pinch of salt. Mix well.
- Frost the cooled brownies.