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Mint Brownies With Brownie Mix

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These Mint Brownies With Brownie Mix are a decadent twist on a classic boxed brownie, and they’re just as fudgy and chocolatey as homemade brownies. The brownies have a crinkled crust and a rich, moist center, with a hint of mint that elevates them from ordinary to irresistible.

They’re perfect for last-minute dessert cravings, quick snacks, or holiday gatherings when you want something indulgent without a lot of fuss. Rich, balanced, and not overly sweet, these brownies are designed to disappear fast — you might want to double the batch!

Mint brownies with brownie mix stacked in a tower garnished with fresh mint.

Fudgy Mint Brownie Done Right.

These mint brownies start with a boxed mix, but the end result feels anything but ordinary. Deeply fudgy, rich, and chocolate-forward, with just enough mint to feel fresh — not overpowering. This is the kind of shortcut baking I genuinely love: minimal effort, maximum payoff. Sam x

Bakery-Style Fudginess – dense, glossy brownies with soft centers and chewy edges
Clean Mint Flavor – subtle and balanced, enhancing the chocolate rather than stealing the show
Elevated Shortcut – a simple base transformed into something indulgent and crowd-worthy

Why this recipe works

Every step and ingredient is chosen to ensure perfect, fudgy brownies every time:

  • Boxed brownie mix provides a reliable base and ensures consistent texture.
  • Mint extract infuses flavor without overpowering the chocolate.
  • Eggs and olive oil add moisture and richness for a soft, fudgy center.
  • Careful mixing ensures no overworked batter, which keeps brownies tender.
  • Optional fresh mint or chocolate chips add texture and bursts of flavor.

The texture is exactly what you want in a brownie: fudgy, slightly dense, and chewy at the edges, with a crinkled top that looks homemade.

These brownies take the convenience of a boxed mix and turn it into a decadent dessert that tastes special and indulgent.

Ingredients you’ll need

Boxed Chocolate Brownie Mix
Provides a consistent base and ensures the brownies bake evenly.

Eggs
Bind the ingredients and add richness for a soft, fudgy texture.

Olive Oil
Adds moisture and helps create a tender, chewy center.

Mint Extract
Infuses the brownies with a bright, refreshing mint flavor.

Optional Fresh Mint
Adds bursts of fresh flavor and texture throughout the brownies.

Optional Chocolate Chips
Enhances the chocolate flavor and adds extra fudgy bites.

How to make mint brownies with box brownies

Preheat & Line Tin: Set your oven to 356ºF (180ºC) fan-forced. Line a 20cm square baking tin with parchment paper and set aside.

Combine Ingredients: In a large mixing bowl, add the brownie mix. Pour in the lightly whisked eggs, oil, and mint extract. Stir the mixture until just combined, ensuring there are no dry pockets but avoid overmixing.

Spoon into Tin & Bake: Transfer the batter into the lined tin and smooth out the top evenly. Bake for 18-20 minutes until the top has a crinkled crust and a toothpick inserted into the middle comes out with a few moist crumbs. 

Cool: Remove from the oven and let the brownies cool in the tin for 10 minutes. Transfer to a wire rack to cool completely. Cut the brownies into squares and enjoy!

Making mint brownies from boxed brownie mix in bowl and spread into tin to bake.

Variations & substitutions

  • Add ½ cup of chocolate chips for extra chocolatey bites.
  • Fold in 1–2 tablespoons of fresh chopped mint for a garden-fresh flavor.
  • Use peppermint extract instead of mint extract for a stronger, candy-like flavor.
  • Make gluten-free by using a gluten-free brownie mix.
  • Add a pinch of sea salt on top before baking for a salted chocolate twist.
Box brownies cut into squares and served on marble platter with fresh mint leaves.

How to store

  • Room Temperature: Store in an airtight container for 3–4 days.
  • Freezing: Wrap tightly and freeze for up to 3 months.
  • Thawing: Leave at room temperature for a few hours before serving.
Easy boxed brownie stacked in a tower.

Mint Brownies With Brownie Mix

5 from 3 votes
These Mint Brownies with Brownie Mix bake up rich and fudgy with a crinkled top and cool mint flavor—an easy, bakery-style dessert in minutes.
Prep Time 5 minutes
Cook Time 20 minutes
Total Time 25 minutes
Servings 16 squares

Ingredients
 
 

  • 18.3 oz box chocolate brownie mix
  • 2 large eggs, lightly whisked
  • 1/2 cup extra virgin olive oil
  • 2 tsp mint extract

Method
 

  • Preheat & Line Tin: Set your oven to 356ºF (180ºC) fan-forced. Line a 20cm square baking tin with parchment paper and set aside.
  • Combine Ingredients: In a large mixing bowl, add the brownie mix. Pour in the lightly whisked eggs, oil, and mint extract.
  • Mix: Stir the mixture until just combined, ensuring there are no dry pockets but avoid overmixing.
  • Spoon into Tin: Transfer the batter into the lined tin and smooth out the top evenly.
  • Bake: Place in the oven and bake for 18-20 minutes. Look for a crinkly crust on top and a toothpick with a few moist crumbs when inserted in the center. Be careful not to overbake to retain a fudgy texture.
  • Cool in Tin: Remove from the oven and let the brownies cool in the tin for 10 minutes.
  • Transfer to Rack: Move them to a wire rack to cool completely.
  • Slice & Serve: Cut the brownies into squares and enjoy!

Nutrition

Calories: 212kcalCarbohydrates: 25gProtein: 2gFat: 11gSaturated Fat: 2gPolyunsaturated Fat: 1gMonounsaturated Fat: 7gTrans Fat: 0.002gCholesterol: 20mgSodium: 103mgPotassium: 8mgSugar: 16gVitamin A: 30IUCalcium: 3mgIron: 1mg

Notes

  • Store: Keep the mint brownies in an airtight container at room temperature for up to 3-4 days.
 
  • Freeze: Wrap the brownies tightly and freeze them in a freezer-safe container for up to 3 months.
 
  • Thaw: To thaw, leave the brownies at room temperature for a few hours before serving.

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Let us know how it was!
5 from 3 votes (3 ratings without comment)

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