Mint Oreo Cookie Brownie Bars Recipe

Ever since I was young, I have loved anything that involved mint and chocolate. Thank goodness holiday recipes use this combination in so many delicious ways! These brownies have a rich minty chocolate flavor with mint-marshmallow creme swirled in the brownies and mixed in the frosting . . . they are nothing short of amazing! Bonus: they use a brownie mix! It doesn’t get any easier than that!


1 (7 oz) container of marshmallow creme
1/8 teaspoon mint extract
8 drops green food color
1 box brownie mix (has to be the 9×13″ pan size)
Water, vegetable oil and eggs called for on brownie mix box
3/4 cup white chocolate chips
1 cup vanilla frosting (I just used store bought, but you could also use your favorite homemade recipe)
18 mint creme Oreo cookies, coarsely chopped (3 cups) 
1. Heat oven to 350°F. Spray 13×9-inch pan with cooking spray. In medium bowl, stir together marshmallow creme, mint extract and 4 drops of the food color until light green.
2. In large bowl, make brownie mix as directed on box, using water, oil, and eggs. Spread batter in pan. Drop 4 or 5 large tablespoonfuls of marshmallow mixture onto batter (reserve remaining marshmallow mixture). Gently pull table knife through marshmallow mixture and batter in S-shaped curves in continuous motion for marbled design. Spread evenly in pan.
3. Bake 25 to 28 minutes or until set. Cool completely, about 1 hour.
4. In small microwavable bowl, microwave baking chips on High 30 seconds; stir. Microwave 30 seconds longer; stir until smooth. Stir melted chips and frosting into remaining marshmallow mixture. Stir in remaining 4 drops food color until light green; spread over cooled bars. Sprinkle with cookies; press in slightly. Cut into bars.
PS- Do you love my yellow and gray chevron platter I served them on? You can get your own at Rosie Posie Designs!


Here are more of our favorite brownie recipes:
Reese’s Brownies
Lunch Lady Brownies
Mom’s Famous Chocolate Marshmallow Brownies
Raspberry White Chocolate Chip Brownies
Fudgy Brownie Recipe

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  1. says

    Oh my, these would not be my friend after I was done with them–I would eat them all! I love mint brownies, but these look out of this world.

    Question–do you make new recipes all the time?? If so, I am coming over. :)

  2. says

    I just made these. They’re yummy, but falling apart they’re so gooey. The brownie mix had the option to make fudgy brownies or cake brownies. I went with fudgy. Should I have gone with cake? Or are they supposed to be extra-gooey? Thanks.

  3. says

    Hi Sherri! These are pretty gooey, but I have not had them fall apart . . . I am so sorry that yours turned out so gooey! I just made the regular fudgy brownies too, so I am not sure why yours turned out that way. I am sorry that I am not much help. Have a Merry Christmas!

  4. says

    Thanks for the recipe. Mine turned out great and didn’t last very long.

    To the one poster whose were falling apart. I added another cup of the white chocolate chips and made my own icing a littler thicker than I normally would. That gives it a little more constancy and should fix any falling apart that might occur.

    • says

      I googled egg substitute for you and here are a few things that popped up….
      You can substitute three tablespoons of mayonnaise for one egg in baking. The recipe I wanted to use called for two eggs, but I only had one. I subbed the mayo for the other egg, and the pumpkin muffins I baked were no different than usual. Or, you can mash half a banana with half teaspoon of baking powder.

      I have also heard of substituting 1 egg for 1 mashed banana.

      ***Remember, these are answers from google, not our own. Best of luck to you! -The Six Sisters

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