Thin Mint {Lover’s} Birthday Cake

This Thin Mint Cake recipe is for all you chocolate mint lovers out there!

Thin Mint Cake


I’m the type of person, when I’m told to do something…..I DO IT!

Earlier this month when we were in Branson, I saw a tweet about a thin mint cake

not just any thin mint cake, but ……. “the greatest cake I have ever made….EVER”

She said if  “If you have ever enjoyed a thin mint you must try this thin mint cake recipe.  You must.

Ummmm, do I like thin mint? you betchya…….and so does my mom!

Friday was my mom’s birthday and she’s even a bigger fan of thin mints…… I knew this thin mint cake would be the perfect birthday surprise!

And boy did she LOVE her thin mint cake!

Almost as much as she enjoyed all the attention she got from her granddaughters!

Birthday Kisses

She said it was CRAZY good……… in make you do crazy things……..

crazy faces

If you have a thin mint lover in your life, you MUST make this Thin Mint Cake for them soon!

thin mint cake inside

Thin Mint Cake Recipe and Tips


here are some of my notes:

  • I baked my cake in 2 – 6″ x 3″ pans = baking time for me was about 56 mins

Thin Mint Cake recipe


1 box chocolate cake mix (I like Duncan Hines Dark Chocolate Fudge Cake Mix)

1 cup water

1 1/3 cup butter, softened

4 large eggs

1/2 ripe banana

1 tablespoon cinnamon

1 tablespoon peppermint extract


  1. preheat oven to 325 degrees F.  Grease and flour sides and bottom of cake pans.
  2. Using a large mixing bowl, combine cake mix and all other ingredients.  Mix on low for one minute, scrape the sides of the bowl, then mix on medium high for one minute longer. Pour cake batter in pans.
  3. Bake following chart in the notes below. Cake is done when toothpick inserted in center comes out clean.
  4. cool in pan(s) on wire rack for at least 15 minutes. Turn cake(s) out onto cooling rack to cool completely before frosting.
  5. Frost with vanilla buttercream.

Pan size / Baking Time Guide

  • 2 6" pans: 52-56 minutes
  • 2 8" pans: 35-38 minutes
  • 2 9" pans: 30-33 minutes
  • 13 x 9-inch pan: 35-38 minutes
  • Bundt pan : 45-50 minutes
  • 24 Cupcakes: 19-22 minutes

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Happy faces all around!!

The Girls


Want more great recipes like this? Follow my TidyMom Easy Recipes Pinterest Board

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This easy and delicious Thin Mint Cake is perfect for the chocolate mint lovers! Click the image to get the recipe at and learn about the unexpected ingredient that makes it extra moist!