Few things say holiday baking season quite like the irresistible combination of deep chocolate and cool peppermint. These Peppermint Brownie Cookies are everything you want in a festive dessert: rich, fudgy centers, slightly chewy edges, crackled tops, and that unmistakable chocolate-mint flavor that feels like Christmas in every bite.
Made with a simple boxed brownie mix and just a handful of pantry ingredients, this recipe is perfect whether you’re a seasoned baker or just starting out. It’s quick enough for busy December days, impressive enough for cookie exchanges, and indulgent enough to become a yearly tradition.
In this full 1500-word SEO-optimized recipe article, you’ll find:
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Step-by-step instructions
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Pro baking tips for perfect texture
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Storage & freezing advice
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Variations and substitutions
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Holiday serving ideas
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FAQs for flawless results
Let’s dive in 🎄
Why You’ll Love These Peppermint Brownie Cookies
These cookies strike the perfect balance between brownies and cookies, giving you the best of both worlds.
Key reasons to love them:
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✔️ Made with boxed brownie mix (easy + reliable)
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✔️ Fudgy, moist centers with chewy edges
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✔️ Perfect chocolate-peppermint balance
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✔️ Ready in under 30 minutes
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✔️ Ideal for Christmas cookie trays & gifting
If you love brownies but want something handheld and festive, this recipe was made for you.
Ingredients You’ll Need
For the Cookies
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1 box brownie mix (18–19 oz, family size works best)
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2 large eggs
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¼ cup vegetable oil (or melted butter for richer flavor)
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1 teaspoon peppermint extract (do not overdo!)
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½ cup semi-sweet chocolate chips (optional but recommended)
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½ cup crushed peppermint candy canes or peppermint baking bits
Optional Toppings
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Extra crushed candy canes
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White chocolate drizzle
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Powdered sugar dusting
Why Use Boxed Brownie Mix?
Using a boxed brownie mix is not “cheating” — it’s smart baking.
Benefits include:
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Consistent chocolate flavor
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Perfect cocoa-to-sugar ratio
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Foolproof fudgy texture
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Saves time and reduces ingredients
This shortcut allows you to focus on flavor upgrades, like peppermint extract and festive toppings.
Step-by-Step Instructions
1️⃣ Preheat & Prep
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Preheat oven to 350°F (175°C)
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Line two baking sheets with parchment paper
2️⃣ Mix the Dough
In a large bowl:
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Add brownie mix
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Stir in eggs and oil
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Add peppermint extract
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Fold in chocolate chips
The dough will be thick and sticky, more like brownie batter than cookie dough — that’s exactly what you want.