Easy Mississippi Mud Sheet Cake

"This is an easy one-bowl cake that is nothing short of amazing! --- make certain to prepare the frosting glaze while the cake is baking as it must be added on while the cake is still warm, no baking powder or soda in this cake, it's a rich dense chocolate cake that more like a brownie texture."
photo by breezermom photo by breezermom
photo by breezermom
photo by breezermom photo by breezermom
Ready In:




  • Set oven to 350 degrees F.
  • Grease a 15 x 10-inch jelly-roll pan.
  • For the cake; in a large bowl beat the melted butter with the next 5 ingredients until combined and smooth.
  • Add in flour; mix until blended.
  • Pour the batter into prepared baking pan.
  • Sprinkle the nuts over the top then push down slightly into the batter.
  • Bake for about 20 to 22 minutes or until the cake tests done.
  • At this point prepare the chocolate frosting while the cake is baking (the cake must be warm before adding on).
  • For the frosting; in a medium bowl beat all ingredients together until smooth and blended; set aside to pour over warm cake.
  • Remove from oven then sprinkle the mashmallows on top; return to oven for another 5 minutes.
  • Drizzle the prepared chocolate frosting over top of the marshmallows.

Questions & Replies

default avatar
Got a question? Share it with the community!


  1. Potluck Genie...
    Eating this cake was a first for me, and am now sure that I will make it again and again. I liked it better the second day and as the cake aged, I thought that it steadily improved. The only two changes I made was to add a grated chocolate bar which had nuts in it, instead of the walnuts called for in the recipe; and added chocolate chips along with the chocolate bar. This cake is delicious and it's hard to refuse just one more piece.
  2. Luby Luby Luby
    This has always been one of my favorite cakes so I decided to treat myself and DH and make this for Kitten in honor of her husband, John. It is so rich and dense and just absolutely yummy!
  3. gwynn
    This cake has been around a while. It is soooo delicious, rich and yummy. Thanks for bringing it back to memory. Will make it soon. Thanks for posting.
  4. breezermom
    This cake is so sweet it makes my teeth hurt....but it is delicious! This is quite possibly the strangest looking cake I've ever made, but despite that, I'll make it again. I may decrease the amount of marshmallows next time, but after waiting a day or so, I may rethink that. I have a feeling they are what is going to keep this cake moist....I have a cake that I bake the marshmallows in, and it gets moister and tastier as it sits. The frosting is too thick to "drizzle", so I just plopped it on and tried to smear it around. The result is my strange looking photo! Don't let my photo scare you, this cake is delicious! Made for Newest Zaar Tag!
  5. Hessa
    anything from Kittencal is amazing, and it goes the same for this recipe :) it was very easy to make and very chocolatey! i rated it a 4 because it was too sweet for my taste.. i might lessen the sugar of the chocolate glaze next time. thank you kittencal :)



Find More Recipes