Description

These Triple Layer Fudgy Mint Oreo Brownies are ultra-rich, gooey, and packed with chocolate-mint flavor. Easy one-bowl recipe with chopped mint Oreos and chocolate chips!

Ingredients

For the Brownie Base:

1 cup unsalted butter (2 sticks), melted and slightly cooled — this creates that signature fudgy texture
1½ cups granulated sugar
4 large eggs, room temperature — essential for a smooth, velvety batter
2 teaspoons vanilla extract — enhances all the chocolate goodness
¾ cup unsweetened cocoa powder — use good quality for the richest flavor
1 cup all-purpose flour
½ teaspoon salt — balances the sweetness perfectly
½ teaspoon baking powder

For the Mint Layer:

12–15 mint-flavored sandwich cookies (like mint Oreos), finely chopped — these add amazing crunch and minty freshness
1½ cups mint chocolate chips (or regular chocolate chips if you prefer a milder mint flavor)

For the Topping:

½–¾ cup additional chocolate chips or chopped chocolate — because you can never have too much chocolate on top

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Instructions

Step 1: Preheat the Oven

Preheat your oven to 350°F (175°C). Grease a 9×13-inch baking pan generously with butter or cooking spray, or line it with parchment paper for easy removal.

Step 2: Make the Brownie Batter

In a large bowl, whisk together the melted butter and granulated sugar until the mixture is smooth and well combined. It should look glossy and slightly thick.

Step 3: Add the Eggs and Vanilla

Add the eggs one at a time, whisking well after each addition until the batter is smooth and silky. Stir in the vanilla extract.

Step 4: Mix in the Dry Ingredients

Add the cocoa powder, flour, salt, and baking powder to the bowl. Stir gently with a wooden spoon or spatula until just combined and no flour streaks remain.

Don’t overmix — we want fudgy brownies, not tough ones.

Step 5: Add the Mint Layer

Fold the finely chopped mint sandwich cookies and mint chocolate chips into the brownie batter. Use a gentle folding motion to distribute them evenly throughout.

Step 6: Bake

Spread the batter evenly into your prepared pan, smoothing the top with a spatula. Sprinkle the additional chocolate chips or chopped chocolate over the top for that extra fudgy, bakery-style finish.

Bake for 25–30 minutes, or until the edges are set and pulling slightly away from the pan, and a toothpick inserted near the center comes out with a few moist crumbs. Remember, a few crumbs are perfect — wet batter means they need more time, but completely clean means you’ve overbaked.

Step 7: Cool and Serve

Allow the brownies to cool completely in the pan on a wire rack before slicing into squares.

Notes

Line your pan with parchment paper with overhang on two sides so you can lift the whole brownie slab out for easier, cleaner cutting
Use a hot, dry knife to cut perfect squares — run it under hot water, wipe dry, then slice; repeat between each cut
Don’t have mint Oreos? Regular Oreos work beautifully too, just add an extra ½ teaspoon of mint extract to the batter
Chopping the cookies finely ensures they’re distributed evenly and don’t create large air pockets in the brownies

Prep Time: 15 minutes
Cook Time: 25–30 minutes
Category: Dessert
Method: Baking
Cuisine: American