Mint Chip Brookies
These brookies marry fudgy brownies and minty green cookie dough studded with chocolate chips. They’re straightforward to make, forgiving in technique, and always a crowd-pleaser when you want something a little nostalgic with a fresh twist.
I test recipes to remove guesswork — times, textures, and tiny tricks that matter. This one uses two batters made separately and layered, so the payoff is a chewy, chocolatey base with soft, minty cookie domes on top. The texture contrast is what keeps people coming back for another bite.
Below you’ll find a clear ingredient list, step-by-step instructions taken exactly from the recipe source, and practical notes on swaps, equipment, common mistakes, and storage so you can bake with confidence.
The Ingredient Lineup
Ingredients
- 4 ounces (113 g) unsweetened baking chocolate (coarsely chopped) — the backbone for an intense, glossy brownie flavor; chop coarsely so it melts evenly.
- ¾ cup (170 g) unsalted butter — used in the brownie layer for richness; measure by weight if you can for consistency.
- 1 ¾ cups (350 g) granulated sugar — sweetens and helps set the brownie crumb; no substitutions listed here.
- 3 large eggs — provide structure and moisture in the brownie; room temperature eggs mix more smoothly.
- 1 teaspoon vanilla extract — adds depth to the brownie; vanilla rounds out the chocolate.
- ½ teaspoon salt — balances sweetness in the brownie; the recipe lists this amount specifically.
- 2 tablespoons (10 g) unsweetened cocoa powder — boosts chocolate intensity and color in the brownie.
- 1 cup (124 g) all-purpose flour — gives the brownie its body; stir in just until combined to avoid toughness.
- ½ cup (113 g) unsalted butter — separate butter amount for the cookie dough; creaming this with sugar builds a light cookie texture.
- ¾ cup (150 g) granulated sugar — sweetens the cookie layer; creamed with butter for lift.
- 1 large egg — binds the cookie dough; adds tenderness.
- 1 teaspoon vanilla extract — flavor for the cookie dough; complements the peppermint.
- ½ teaspoon peppermint extract — gives the mint flavor that defines these brookies; start with the listed amount—peppermint is potent.
- ½ teaspoon baking soda — leavening for the cookie dough; helps the cookie dough spread slightly and stay tender.
- ½ teaspoon salt — balances the cookie dough; identical amount noted separately from the brownie salt.
- 2 cups (248 g) all-purpose flour — primary dry ingredient for the cookie dough; mix just until a dough forms.
- 8–10 drops green food coloring (optional) — for the classic mint-green color; optional and purely visual.
- 1 ½ cups (255 g) chocolate chips — stirred into the cookie dough to create the mint chip effect.
From Start to Finish: Mint Chip Brookies
- Preheat oven to 350°F (175°C). Line a 9×13-inch pan with foil and spray the foil with cooking spray; set the pan aside.
- In a large microwave-safe bowl, combine 4 ounces (113 g) coarsely chopped unsweetened baking chocolate and ¾ cup (170 g) unsalted butter. Microwave on HIGH for 2–3 minutes, stirring every 30 seconds, until the chocolate and butter are fully melted and smooth. Let cool slightly (about 1–2 minutes).
- Stir 1 ¾ cups (350 g) granulated sugar into the melted chocolate mixture until combined.
- Add 3 large eggs one at a time, stirring well after each addition. Stir in 1 teaspoon vanilla extract, ½ teaspoon salt, and 2 tablespoons (10 g) unsweetened cocoa powder until evenly mixed.
- Add 1 cup (124 g) all-purpose flour and stir just until combined and no large streaks of flour remain. Spread the brownie batter evenly into the prepared 9×13 pan.
- In the bowl of a stand mixer or a large bowl with a hand mixer, cream ½ cup (113 g) unsalted butter and ¾ cup (150 g) granulated sugar together on medium speed until light and fluffy, about 2–3 minutes.
- Add 1 large egg, 1 teaspoon vanilla extract, and ½ teaspoon peppermint extract to the creamed butter and sugar; mix until combined.
- Add ½ teaspoon baking soda and ½ teaspoon salt; mix briefly to incorporate.
- Add 2 cups (248 g) all-purpose flour and mix on low speed (or stir by hand) just until a dough forms. If using, add 8–10 drops green food coloring now and mix until the color is uniform, scraping the sides and bottom of the bowl.
- Stir 1 ½ cups (255 g) chocolate chips into the cookie dough.
- Using a tablespoon, scoop rounded tablespoons of cookie dough, flatten each slightly with your fingers, and place them evenly over the brownie batter. Press gently so cookie pieces touch and adhere to each other and to the brownie layer; do not try to spread the dough across the batter.
- Bake in the preheated oven for 30–40 minutes, until the cookie tops are starting to turn golden and a toothpick inserted in the center comes out with some moist crumbs (not wet batter).
- Remove from the oven and cool completely in the pan on a wire rack. Once cool, use the foil to lift the brookies from the pan and cut into bars.
- Store cooled brookies in an airtight container for up to 4 days or freeze for up to 3 months.
What Sets This Recipe Apart
It’s the two-texture approach: a dense, fudgy brownie base paired with a pillowy mint cookie top. That contrast creates a satisfying bite — fudgy center, slightly chewy cookie, and pockets of melted chocolate from the chips. The peppermint extract is used sparingly so the mint complements rather than overwhelms the chocolate.
Also, the cookie dough is portioned as individual pieces on top rather than being spread. That method prevents the brownies from being weighed down and creates charming little domes that bake into one another, giving each bar defined layers instead of a single uniform slab.
Easy Ingredient Swaps
- Chocolate chips: Swap semisweet or dark chips for milk chips if you prefer a sweeter bite. Adjust to taste.
- Butter: Use salted butter and reduce the added salt amounts slightly if needed; be mindful of final saltiness.
- Peppermint extract: If you want a milder mint presence, use half the listed amount and taste; peppermint is potent.
- Food coloring: Omit the green coloring entirely if you prefer a natural mint look; it won’t affect flavor.
Hardware & Gadgets
- 9×13-inch pan: Essential for the correct thickness and bake time.
- Foil and cooking spray: Lining and spraying the foil makes lifting the brookies easy.
- Microwave-safe bowl: For melting the chocolate and butter together; you can also melt over a double boiler.
- Stand mixer or hand mixer: Speeds up creaming the cookie dough; you can mix by hand if needed.
- Tablespoon scoop: For uniform cookie dough portions across the brownie layer.
- Wire rack: For cooling completely before cutting to avoid crumbly edges.
Common Errors (and Fixes)
Brownie layer issues
If the brownie layer is underbaked while the cookie tops are done, check oven hot spots and your pan placement. Bake in the center of the oven for even heat. A slightly moist crumb on a toothpick is correct — aim for that, not a dry clean pick.
Cookie tops spreading too much
If the cookie dough spreads into a single sheet, the dough might be too warm or over-flattened when placed. Chill the dough briefly (10–15 minutes) before portioning, and press only gently so the pieces touch but don’t merge into a flat layer.
Too minty or not minty enough
If the peppermint flavor is overwhelming, use less next time (start with half). If it’s too faint, increase by small increments — peppermint extract is concentrated, so small changes go a long way.
In-Season Flavor Ideas
Mint naturally pairs with holiday flavors; near winter, accent the brookies with a dusting of crushed candy cane or a few extra chips on top before baking for festive crunch. In summer, serve them chilled with a scoop of vanilla ice cream for contrast. A drizzle of warm chocolate or caramel at any time adds an extra layer of indulgence.
Little Things that Matter
Room temperature ingredients
Bring eggs and butter to room temperature before mixing. This helps them incorporate smoothly and produces a more even texture in both batters.
Placement of cookie dough
Don’t try to spread the cookie dough — the recipe is designed for scooped pieces that are pressed to touch. This gives the brookies their characteristic pockets and prevents the top from becoming overly dense.
Cooling fully
Let the brookies cool completely in the pan before lifting and cutting. Warm brookies will crumble and lose their clean layers; patience here yields neat bars and cleaner slices.
Store, Freeze & Reheat
Store cooled brookies in an airtight container at room temperature for up to 4 days, as the recipe states. For longer storage, freeze flat in a single layer until solid, then stack with parchment between layers and freeze for up to 3 months. Thaw overnight in the refrigerator or at room temperature for a few hours.
To refresh from chilled or frozen, warm a single piece in the microwave for 10–15 seconds to soften the chocolate and lift flavors, or place in a 300°F oven for 5–8 minutes if you prefer a warmed exterior.
Questions People Ask
- Can I make this gluten-free? You can try a 1:1 gluten-free flour blend in place of the all-purpose flour, but expect textural differences.
- Do I have to use peppermint extract? No — omit it for plain chocolate chip brookies or reduce the amount if you want a subtler mint note.
- How do I know when they’re done? Look for cookie tops turning lightly golden and a toothpick in the center coming out with some moist crumbs.
- Can I make the dough ahead? Yes, cookie dough can be chilled for up to 24 hours before assembling and baking; allow slightly more baking time if dough is cold.
Ready to Cook?
These Mint Chip Brookies are straightforward but rewarding. Follow the ingredient list exactly, work in the order given, and mind the small details: room temperature ingredients, portioned cookie pieces, and full cooling. The result is a portable, sharable treat with bold chocolate, bright mint, and a pleasing contrast of textures.
Gather your ingredients, preheat your oven, and let the brownie layer set while you prepare the cookie dough. When they come out of the oven, resist cutting too soon — the cool-down is worth the clean bars and tidy layers. Happy baking.
Mint Chip Brookies
Ingredients
Equipment
Method
- Preheat oven to 350°F (175°C). Line a 9×13-inch pan with foil and spray the foil with cooking spray; set the pan aside.
- In a large microwave-safe bowl, combine 4 ounces (113 g) coarsely chopped unsweetened baking chocolate and ¾ cup (170 g) unsalted butter. Microwave on HIGH for 2–3 minutes, stirring every 30 seconds, until the chocolate and butter are fully melted and smooth. Let cool slightly (about 1–2 minutes).
- Stir 1 ¾ cups (350 g) granulated sugar into the melted chocolate mixture until combined.
- Add 3 large eggs one at a time, stirring well after each addition. Stir in 1 teaspoon vanilla extract, ½ teaspoon salt, and 2 tablespoons (10 g) unsweetened cocoa powder until evenly mixed.
- Add 1 cup (124 g) all-purpose flour and stir just until combined and no large streaks of flour remain. Spread the brownie batter evenly into the prepared 9×13 pan.
- In the bowl of a stand mixer or a large bowl with a hand mixer, cream ½ cup (113 g) unsalted butter and ¾ cup (150 g) granulated sugar together on medium speed until light and fluffy, about 2–3 minutes.
- Add 1 large egg, 1 teaspoon vanilla extract, and ½ teaspoon peppermint extract to the creamed butter and sugar; mix until combined.
- Add ½ teaspoon baking soda and ½ teaspoon salt; mix briefly to incorporate.
- Add 2 cups (248 g) all-purpose flour and mix on low speed (or stir by hand) just until a dough forms. If using, add 8–10 drops green food coloring now and mix until the color is uniform, scraping the sides and bottom of the bowl.
- Stir 1 ½ cups (255 g) chocolate chips into the cookie dough.
- Using a tablespoon, scoop rounded tablespoons of cookie dough, flatten each slightly with your fingers, and place them evenly over the brownie batter. Press gently so cookie pieces touch and adhere to each other and to the brownie layer; do not try to spread the dough across the batter.
- Bake in the preheated oven for 30–40 minutes, until the cookie tops are starting to turn golden and a toothpick inserted in the center comes out with some moist crumbs (not wet batter).
- Remove from the oven and cool completely in the pan on a wire rack. Once cool, use the foil to lift the brookies from the pan and cut into bars.
- Store cooled brookies in an airtight container for up to 4 days or freeze for up to 3 months.
Notes
Use ametal panto bake this recipe for best results. Metal will conduct the heat more evenly and ensure the brownies are baked.
It’ll behard to spread the cookie doughbecause it’s thicker than the brownie batter, so it’s best to drop flattened tablespoons evenly over the batter and then press lightly with your fingers to adhere them to each other.
Thebrownie layer stays fudgy and softbut does get baked through. If you like a more done brownie, invert the layers and put the cookie on the bottom.
If using salted butter, reduce salt to 1/4 teaspoon each in both cookies and brownies.
