Cookie Sheet Chocolate Cake

First off, to my followers, I am SO sorry I have not posted in forever.  Literally, forever.  I have gotten a few requests to start posting recipes again.  You see, I am pregnant with number 2 and food just has not been appealing to me lately, hence the no baking/cooking really.  But good news, I am back!  Or at least trying to be!  Haha!  So with out further ado, a new recipe! :)

This has been one of my favorite chocolate recipes since forever!  Whenever my mom would say, “I want something chocolate, what should I make?”  This was always the response.

Cookie Sheet Chocolate Cake from …This will quickly become one of your favorite cake recipes of all time! It is AMAZING!

4.6 from 8 reviews
Cookie Sheet Chocolate Cake
  • 2 cups flour
  • 2 cups sugar
  • ½ cup butter
  • 1 cup water
  • 4 Tablespoons cocoa
  • ½ cup shortening
  • ½ cup buttermilk
  • ½ teaspoon baking soda
  • 2 eggs
  • 1 teaspoon vanilla
  • ½ cup butter
  • 6 Tablespoons milk
  • 3 Tablespoon cocoa
  • 16 oz. powdered sugar
  • 1 teaspoon vanilla
  • (nuts if desired, I never add them)
  1. In a large mixing bowl, measure flour and sugar. Set aside.
  2. In a medium sauce pan, combine butter, water, cocoa and shortening. Bring to a boil. After mixture reaches a boil, add it to the flour mixture and stir to combine.
  3. Add buttermilk, then baking soda, then eggs, then vanilla in that order, mixing in-between each addition.
  4. Pour into a greased cookie sheet and bake at 400 degrees F for 20 minutes
  1. Bring combine butter milk and cocoa and bring to a boil, stir in powdered sugar and vanilla until smooth.
  2. After cake has cooked, remove from oven and poke holes in hot cake with a fork. Pour frosting evenly over top.


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  1. The Nummy Little Blog

    Isn't this the best cake?! It's the same recipe that my Mom gave me while I was growing up. I make it for my family all the time. We love it! I think it must be a Utah thing. :)

    • linda jordan

      Made one tonight to send granddaughter ( away at college ) ..My cake recipe for the cake calls for butter – sour cream – and no vanilla..I have been told that either way – they taste the same..This cake calls for water and I always add milk instead of water (in most recipes calling for water)..This is the favorite cake recipe of all four grandchildren..

  2. Seven Sisters

    this looks delicious!! sheet cake…yum…
    thanks for stopping by and leavin' some love!

  3. Cynthia

    growing up my mom always made this for large group cookouts. She added cinnamon and I was never much of a fan until one day I made it without the cinnamon! YUM. I think I will make it for after church tomorrow.. I haven't made it in years!

    • Martha n tX

      can be any where from a 9×13 inch pan to a l0 x 15 inch.. when it is in the smaller pan it makes a thicker cake…

  4. Martha n tX

    this is a good & easy little ol cake.. In our area it is known as a Texas Sheet cake I like to add just a tsp of cinnamon.. Makes it taste so good…

  5. Marle

    On the frosting you said one box of powder sugar could you tell me how many cups is that or size of box?
    Thank you!

      • ron

        funny how things are different in different parts of the country, I am from Minnesota and I would have to look hard to find a 1 lb box of p sugar. But there will will stacks of 2 lb bags made by different companies

    • Pam

      A co-worker gave me a recipe very similar to this. She called it “20 Minute Chocolate Cake” and she baked it in a glass oblong cake pan. It didn’t have shortening – instead all margarine or butter. It is to die for!!
      However, whenever I’ve made it I had to let it bake at least 30 minutes or it was soupy in the middle.
      Thanks for sharing… I haven’t made this in years and now my taste buds are asking for it.

  6. Donna

    Add a little cinnamon to both the cake and icing and chopped pecans to the icing and you’d have a Texas Sheet Cake. That was the second cake I learned to make from scratch when I was 7 yrs old.

  7. verapeter

    I’ve baked this last week n one word Delicious! I couldn’t agree more with you! This recipe is a keeper well for me

  8. Carol

    Congratulations! Can you tell me the size if the cookie sheet you used? I have 2 different size cookie sheets. Thanks

  9. I have tried to make a couple of variations of this cake before and have failed all but one time. In the past, after the 20 minute bake time, it was still soupy in the middle. What am I doing it not doing wrong? I will wait to hear back from someone before I attempt it again!! I have tasted the finished product, made by someone besides myself, and it is amazing. You don’t just eat this cake, you make love to it!

  10. Robin G

    This sounds great! When you say “shortening” in this recipe, can you please be more specific on what to use? Are you saying something like crisco?

  11. Denise Rutledge

    What kind of flour do you use? All purpose, cake, self rising? Sounds delicious! Can’t wait to bake it!

  12. Roland Hurley

    Hi there, maybe I’m just being a guy, but is there another term used for the ingredient shortening? Think we must know it as something different in South Africa?

  13. Andrea

    I don’t know if my comment posted or not before so will say again.. what kind of flour? And what is shortening?? Thank you :)

  14. IZ

    In the oven as I write this message, frosting is done just waiting can’t wait to try!

    Only made one modification used only 1 cup of sugar!

  15. Pia

    hi, that’s a yummy cake. I live in Europe and I would be SO happy if you could make all your’e recipes in grams, cm and degrees so it makes me and other people little easier to bake and follow your’e blogg. Thank’s a Lot

  16. Julia

    I’m from Michigan, and this is exactly the recipe my mom always called “Good Boy Cake”. She sprinkled nuts on top when we could afford it! Love it!

  17. Janice

    Looks great is the flour plain or self-rising and yes the size of cookie sheet and depth is it better to cook in cookie sheet or the foil pan that are cookie sheet sized

  18. Jane

    I have made this cake for 50 years. I always put nuts and coconut in the frosting. I will try it with only pecans the next time. I use regular flour and Crisco and not butter in the cake. I have never had a failure so I will stay with the way I make it. When I put the frosting on the hot cake, I don’t poke holes in it.

  19. Gretchen

    Thank you for posting this recipe. My mother made this all the time for every gathering as far back as I can remember, and that would be at least the l950s. We are native Texans, so of course it was a Texas Sheet Cake. After she cut it into squares she would always put a pecan half in the center of each square…Texas pecans, of course. Delicious cake!!


    My grandmother always had this for us when we came in town to visit. It was so delicious! This brings back such fond memories of days gone by. Thanks for the memories! I’m making this for my family today!!

  21. regina

    Been looking for this recipe. Love it. Do you have the pineapple sheet cake recipe by chance. My family would love it if I could find that one too. Thanks

  22. Stephani

    This looks yummy. Will this work with dry buttermilk? If so, should I just add the dry buttermilk with the other dry ingredients, or should I mix buttermilk then add it according to directions? Thanks

  23. Jean McCartney

    Cookie sheet chocolate cake saw on fb from sister in law,first time getting a recipe from you. Will fix and comment on it. Jean McCartney’s