Grandma’s Texas Sheet Cake

Every year growing up when I was asked what I wanted to eat for my birthday my response would be simple and to the point: “Grandma’s Texas Sheet Cake and homemade ice cream”. My birthday is July 5, so outdoor activities and grilling up burgers and dogs was typically involved, but you know what I was all about. Gimme that cake! These weren’t just any regular Texas Sheet Cakes though. They were my Grandma’s sheet cakes. Big difference. You had your usual candles to blow out, but they weren’t unaccompanied by any means. You would have all of your favorite things topping that cake. Anything that you loved or were crazy about, you would find it on top of your sheet cake. Mine were topped off with little rubber horses (you know those ones you find at TSC?! Thats Tractor Supply Co. for you city folk), dogs, spoons, spatulas, sprinkles, barns, flowers, and you better believe your name was on that cake! The decorations didn’t even have to match because everything made sense together. Every one was just so special and baked and decorated with all the love in the world.

The flavor and the simplicity of this cake is just unbeatable. Literally, you don’t even have to beat it! It was so fun being able to read the recipe off of the little, hand-written recipe card that my Grandma gave to me (you better believe that cursive was on point) and to also be able to text her and send her pictures of the process. You can have a whole cake baked, frosted and decorated in 30-40 minutes. How crazy is that?! I think its da best. The cake is so rich and moist and chocolately and perfect in every single bite. I can just dream of it now. By the way, I made this for my husband’s birthday AND HE TOOK THE LEFTOVERS TO WORK. WHAT WAS HE THINKING. WE COULD HAVE EATEN CAKE FOR BREAKFAST, LUNCH AND DINNER. I’m not biter about it at all being that we’re moving in a week and I’m not going to buy any more groceries so therefore I can’t just make this cake again because I don’t have the ingredients. I still love him though.

Plus, this is like a slab of cake. Who doesn’t want a slab of deliciously moist, decadent cake? You can feed a crowd and a family with this thing.

This recipe is so so so special to me and I hope that it can be for you and your family too. My Grandma has perfected her recipe over the years and its just unbeatable.


Grandma’s Texas Sheet Cake



For the cake:

  • 2 cups sugar
  • 2 cups flour
  • 1/4 teaspoon salt
  • 1 cup water
  • 1/2 cup vegetable oil
  • 5 Tablespoons cocoa
  • 2 sticks butter (16 Tablespoons)
  • 2 eggs
  • 1 teaspoon baking soda
  • 1/2 cup buttermilk
  • 1 teaspoon vanilla

For the frosting:

  • 1/2 cup evaporated milk
  • 1 cup sugar
  • 2 cup mini marshmallows (or 20 large ones)
  • 1 cup chocolate chips (semi-sweet)
  • 1 Tablespoon butter
  • 1 Tablespoon vanilla



For the cake:

  1. Preheat your oven to 350 degrees.
  2. In a medium-sized bowl, mix together the sugar, flour and salt. In a small sauce pan over medium heat, combine the water, oil, cocoa and butter. Bring to a boil and pour over the dry ingredients. Mix together until smooth. Add in the eggs, baking soda, buttermilk and vanilla and whip together until smooth.
  3. Pour the batter onto a sprayed baking/cookie sheet (the large size, not the small size). Bake for 20 minutes or until a toothpick inserted into the middle comes out clean.

For the frosting:

  1. While the cake is cooking, use the same small sauce pan used prior to bring the evaporated milk and sugar to a low boil over medium heat. Add in the marshmallows and stir until smooth. Reduce the heat to low. Add in the chocolate chips, butter and vanilla. Mix until smooth and silky.
  2. After the cake is out of the oven and still warm, spread the frosting on top of the cake. Be careful to not let it sit too long, as it will be harder to spread on the cake once it has set.
  3. Top with sprinkles, nuts, little rubber horses, flowers, candy, streamers, or whatever your heart desires.


  1. Mrs. C May 30, 2017

    Just wondering if the evaporated milk was a 1/2 cup or 1/2 can? Looking forward to trying this recipe!

  2. Mrs. C May 30, 2017

    Just wondering if the evaporated milk was 1/2 cup or 1/2 can? Looking forward to trying this recipe!

    • kJ May 30, 2017

      It is 1/2 cup! 😊 Let me know how you like it – it is definitely a family favorite of ours!

  3. Mrs. C June 10, 2017

    It was delicious! My niece loves Texas sheet cake, and said this one was really good. I particularly loved the flavor of the cake, but a thin layer of the frosting was also great with it. Thank you for the recipe!

    • kJ June 10, 2017

      Oh that’s so great! I’m glad you guys enjoyed it – I sure do love it! Thank you!

      • Mrs. C June 12, 2017

        Sorry… I forgot to ask what kind of chocolate chips you use. Semi-sweet?

        • kJ June 12, 2017

          Yes! I will get that adjusted in the recipe 🙂 thank you for pointing that out!

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