Peppermint Brownies with Buttercream Frosting

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Isn’t it so easy to procrastinate and find ourselves in a rush as the holidays draw near? I know it can be for me so that’s why I’ve decided to create a festive yet simple holiday dessert. So easy in fact that it begins with a boxed brownie mix. I think the best way to improve a boxed brownie mix is to swap out the oil for melted butter and to replace the water with milk. You don’t have to make those changes, you could simply make the brownies as listed on the package (just be sure that you add in the 1/2 tsp of peppermint extract). I would highly recommend that you do give the butter option a try though because it just makes the brownies taste as though they were made from scratch. They are rich, fudge-y, chewy and oh so chocolaty delicious. The peppermint extract and crushed peppermint candy canes gives these brownies such a Christmas inspired look and taste, and the Peppermint Buttercream whipped to fluffy perfection just takes this dessert over the top. Enjoy and Happy Holidays! Thanks Jamie for inviting me to be part of such a fun Christmas event here on I Heart Nap Time!

Peppermint Brownies with Peppermint Buttercream Frosting {Recipe}


  • Yields 12 - 16 servings
  • 1 (18.3 oz) box Betty Crocker Fudge Brownie Mix
  • 2/3 cup butter, melted (10 2/3 Tbsp)
  • 1/4 cup milk
  • 2 large eggs
  • 1/2 tsp peppermint extract
  • 1 recipe Fluffy Peppermint Buttercream Frosting, recipe follows
  • 1/3 cup crushed peppermint candy canes, for topping (optional)


  1. Preheat oven to 325 degrees. In a mixing bowl combine brownie mix, melted butter, milk, eggs and peppermint extract and using a wooden spoon, stir until combine. Pour mixture into a buttered 8 x 8-inch glass baking dish and bake in preheated oven 50 - 55 minutes. Allow to cool completely then frost with Fluffy Peppermint Buttercream Frosting and sprinkle with optional crushed peppermint candy canes (note that it will take several hours for the brownies to cool completely because they are thick, so plan accordingly).


Peppermint Buttercream Frosting {Recipe}


  • 1/2 cup butter, at room temperature
  • 1 3/4 cup powdered sugar
  • 1 1/2 Tbsp heavy cream
  • 1/2 tsp peppermint extract


  1. In the bowl of an electric stand mixer fitted with the paddle attachment, whip butter on medium-high speed until very pale and fluffy about 6 - 8 minutes, occasionally scrapping down sides of the bowl. Add in powdered sugar, heavy cream and peppermint extract then mix on low speed until combine, then increase mixer to medium-high speed and beat until very light and fluffy, about 3 - 4 minutes, occasionally scraping down sides and bottom of the bowl.


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Coleen Bassett

Hi, it’s me…Coleen! I grew up in northern California. I am the second of four children. I went to college at Chico State where I met and married the love of my life 10 years ago. We have two wonderful, amazing, loving children! I am a bit of a crazy bike rider/barefoot runner! My favorite past time is to go for a run…barefoot! I am passionate about design!! I have been an independent creative consultant for 6 years. Someday I will travel the world and speak 7 different languages. Life is so good!