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chocolate mint brownies for st patricks day treats

Melt in Your Mouth 3 Layer Chocolate Mint Brownies

These three-layer chocolate mint brownies are perfect for St Patrick’s Day – or any day. They have three delicious layers: brownie on bottom, a fluffy, flavorful green mint layer in the center, and a chocolate layer on top made with chocolate chips, butter and a little whipping cream. (I think you’re drooling a little!)

Yes, it’s homemade if you use a boxed brownie mix.

This recipe uses a boxed brownie mix as a base. No, it’s not cheating – it’s a great idea! More flour in the batter produces a cakey brownie. I love chewy brownies which requires less flour, but they can be crumbly if you don’t have enough flour. With a mix you’re guaranteed to have the scientifically measured amount to have wonderfully chewy brownies with the perfect consistency.

This recipe sets the foundation of an amazing treat by using a brownie mix for the base, freeing you to focus on the other 2 layers.

Video, recipe and photo courtesy of

Three Layer Chocolate Mint Brownie Recipe


  • Nonstick cooking spray
  • 1 box supreme brownie mix with chocolate syrup pouch
  • 3 tablespoons water
  • 1/3 cup vegetable oil
  • 1 egg


  • 3 1/2 cups powdered sugar
  • 1/4 cup butter, softened
  • 1/4 cup whipping cream
  • 5 ounces cream cheese, softened
  • 1/2 teaspoon peppermint extract
  • 5 drops green food color


  • 1/2 cup whipping cream
  • 1 bag (12 ounces) chocolate chips
  • 1/2 cup butter


  1. Heat oven to 350 F.
  2. Spray 8-by-8-inch pan with nonstick cooking spray.
  3. In large bowl, mix brownie mix, water, oil and egg until combined. Pour into prepared baking pan. Bake 35 minutes. Cool completely, about 1 hour.
  4. To make filling: In large bowl, beat powdered sugar, butter, whipping cream, cream cheese, peppermint extract and food coloring. Spread over cooled brownies. Refrigerate 1 hour, or until set.
  5. To make topping: In saucepan, melt whipping cream, chocolate chips and butter until smooth. Cool until lukewarm, about 10 minutes. Pour over filling; spread to cover. Refrigerate 2 hours, or until set.
  6. Before serving, let brownies set 10 minutes at room temperature.


Cut brownies with long wet knife for cleaner cuts. Store covered in refrigerator.

Want the minty part a particular shade of green?

See our article with McCormick food coloring mixing chart with 7 shades of green.

Want to print this recipe for your Celebrate Everything Cookbook?

St Patricks Day chocolate mint brownies Recipe

Download the PDF and print at home or a professional printers.

If you don’t have PDF software, you can use the free adobe reader.

See our other St Patrick’s Day treats.

Want more? See all of our St Patrick’s Day Irish food & fun ideas for kids and adults.

st patricks day fun ideas

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Melt in Your Mouth 3 Layer Chocolate Mint Brownies
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