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The BEST Cake Mix Mississippi Mud Cookies
4.93 from 13 votes

Cake Mix Mississippi Mud Cookies

Easy to make, soft chocolate cookies topped with fluffy marshmallow frosting, rich chocolate icing and walnuts!

Prep Time 5 minutes
Cook Time 10 minutes
Servings 24 people


Soft Chocolate Cookies

  • 1 box Devil's Food Cake Mix I prefer Pillsbury because they don't flatten out when baking
  • 2 eggs
  • 1/3 cup oil
  • Marshmallow Frosting
  • 1/2 cup unsalted butter softened
  • 1/4 tsp. salt
  • 1 7- oz jar Marshmallow Creme Fluff
  • 1/2 tsp. vanilla extract
  • 2-3 cups powdered sugar

Chocolate Icing

  • 1/4 cup butter melted
  • 1/4 cup unsweetened cocoa powder
  • 1/2 tsp. vanilla extract
  • 3 Tbsp. milk
  • 2 cups powdered sugar
  • 1/2 cup chopped walnuts optional


  1. COOKIES: Preheat oven to 350 degrees and line cookie sheets with parchment paper. Combine cake mix, eggs and oil in a bowl. The dough will be thick. Make golfball sized dough balls, place on cookie sheets and bake for 7-10 minutes, don't over-bake! Let cool.
  2. MARSHMALLOW FROSTING: Beat butter, salt, marshmallow creme, vanilla and 2 cups powdered sugar together. Continue to add more powdered sugar to thicken. If it becomes too thick add 2 tablespoons milk! Frost cooled cookies.

  3. CHOCOLATE ICING: In a medium bowl add all ingredients listed and whisk together until smooth. spoon over frosting cookies and top with walnuts if desired! (You can always use sprinkles instead of nuts.)