Texas Sheet Cake Brownies

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Texas Sheet Cake Brownies are a chocolatey delight and a serious crowd pleaser. This classic recipe comes from Norma Jean’s Kitchen, and is one of our special occasion desserts. So moist and delicious every time!

A close up of one brownie on a spatula, with the pan of brownies in the background.

There is SO much history in this brownie recipe for me. Norma Jean (my mom!) made this many times over the years, and I can literally remember the partially eaten pan sitting on the stovetop. I would take a small sliver every time I walked by it, because you know, there are less calories in small pieces. Unless you devour an entire row without realizing it.

After having kids, I started making this for our boys’ birthdays. I made it for school parties, big birthday bashes with lots of kids, and for just our family – which was dangerous. I still know how to cut small slivers that add up to a row.

This recipe has been passed on and on and on. If I know you, you probably have it written down somewhere. But if not, now you have it right here on the blog.

A side shot of a sheet pan of brownies, with one row missing.

Ingredients needed for Texas Sheet Cake Brownies:

You can make the brownie batter in one bowl, with a whisk (shown below)! So easy.

  • Pantry Staples – You’ll need the usuals here: all-purpose flour, sugar, cocoa, salt, baking soda, and vanilla. I order THIS vanilla, ever since my mother recommended it. The BEST.
  • Dairy – Just unsalted butter and sour cream. I use the light version, but it doesn’t matter that much.
  • Eggs
  • Hot Water

Frosting Ingredients:

  • More butter! 😀
  • More sugar…
  • Milk
  • Mini Marshmallows
  • Chocolate Chips

Now that we’ve got the super simple list of ingredients, we can talk about how to make this amazing dessert that you will soon fall in love with. I know it.

Overhead shot of a glass bowl of brownie batter, with a whisk in the middle.
Side shot of a hand spooning chocolate frosting out of a pan, on to a sheet pan of brownies.

How to make the best Texas Sheet Cake Brownies:

  1. Make the batter. In a large mixing bowl, combine the dry ingredients – flour, sugar, cocoa, salt, and baking soda. Add melted butter, hot water, and vanilla. Combine, and then add sour cream light and the eggs. Mix well.
  2. Pour batter. Spray a large jelly roll pan with baking spray, and pour the batter in the pan, smoothing it out evenly throughout.
  3. Bake. Bake the brownies in a preheated oven for approximately 25 minutes, or until a toothpick, when inserted, comes out clean.
  4. Make frosting. In a small saucepan, combine the butter, sugar, and milk. Bring to a boil, and then reduce heat. Add the marshmallows and chocolate chips, and stir until completely melted. Remove pan from heat and let the frosting set up slightly. This may take an hour or so. You don’t want it too runny, but you also don’t want it too thick.
  5. Spread the frosting on the brownies. When brownies are completely cool, spread the frosting on top, and smooth over the top with a spoon. Add a sprinkle of kosher salt (optional).
Overhead shot of a pan of Texas Sheet Cake Brownies.

This recipe has definitely been my go-to over the years, especially pre-blog. They are super easy to decorate in a variety of ways and for a variety of occasions – for birthdays, holidays, engagement parties, anniversaries, and so on. I highly recommend you try them and check back with me. Soon! 😀


Side shot of a spatula holding one brownie, resting on a sheet pan of brownies.

Make these brownies next: Triple Chocolate Brownies

Please let know if you try this recipe. Be sure to comment and leave a review on the blog so I can see what you think. You can also like my Facebook Page, follow me on Pinterest, and catch me on Instagram.

xoxo ~Sue

A close up of one brownie on a spatula, with the pan of brownies in the background.

Texas Sheet Cake Brownies

Texas Sheet Cake Brownies are a chocolatey delight and a serious crowd pleaser. This classic recipe comes from Norma Jean's Kitchen, and is one of our special occasion desserts. So moist and delicious every time!
4.73 from 18 votes
Print Pin Rate
Course: Dessert
Cuisine: American
Prep Time: 20 minutes
Cook Time: 25 minutes
Total Time: 45 minutes
Servings: 24 brownies
Calories: 280kcal
Author: Sue Ringsdorf


  • jelly roll pan


For the brownies:

  • 2 cups all-purpose flour
  • 2 cups sugar
  • 1/4 cup cocoa
  • 1/2 teaspoon salt
  • 1 teaspoon baking soda
  • 1 cup unsalted butter – melted
  • 1 cup hot water
  • 1 teaspoon vanilla
  • 2 large eggs
  • 1/2 cup sour cream

For the frosting:

  • 6 Tablespoons unsalted butter
  • 1 1/3 cup sugar
  • 6 Tablespoons milk
  • 1/2 cup mini marshmallows
  • 1/2 cup chocolate chips


For the brownies:

  • Mix the flour, sugar, cocoa, salt and baking soda together in mixing bowl.
  • Add melted butter, hot water, and vanilla. Mix well.
  • Add the eggs and sour cream, and beat well.
  • Pour the batter into a greased (12×17) jelly roll pan. Bake at 350 degrees for 25 to 30 minutes, or until toothpick comes out clean.

For the frosting:

  • In a mediums saucepan, boil the butter, sugar, and milk for two minutes. Add chocolate chips and marshmallows, and stir until melted. 
  • Spread over brownies when cool.



  • If the frosting is too runny, let it sit for awhile to thicken slightly. If it gets too thick, you can always add a couple drops of milk.
  • These brownies stay fresh on the counter for several days.


Calories: 280kcal | Carbohydrates: 40g | Protein: 2g | Fat: 13g | Saturated Fat: 8g | Cholesterol: 46mg | Sodium: 110mg | Potassium: 44mg | Sugar: 31g | Vitamin A: 390IU | Vitamin C: 0.1mg | Calcium: 22mg | Iron: 0.7mg
Tried this recipe?Mention @Suebeehomemaker or tag #suebeehomemaker!


  1. Julie Mitchell says:

    Can I use almond milk fir the frosting recipe?

    1. Suebee Homemaker says:

      I’m guessing you could, but haven’t tested that with these brownies.

  2. Ann Reese says:

    I want to make this! Can I use a 9 x 13 Pan???

    1. Suebee Homemaker says:

      Hi Ann. I would use two pans – one 9×13 and another 8×8 or so.

    1. Suebee Homemaker says:

      Thanks so much, Patty!

  3. Roberta L Wells says:

    Oh my I was so excited I forgot my rating for my comment on these Texas Sheetcake Brownies. Thank you so much for such a great blog with wonderful recipes.

    1. Suebee Homemaker says:

      Hi Roberta! I’m so glad you are going to make these brownies! They are a classic, and so you can never go wrong. Enjoy! ๐Ÿ™‚

  4. Roberta L Wells says:

    I had gotten a recipe like this over 25 yrs ago. My friends and family loved those Texas sheetcake brownies. Sadly i lost the recipe in my move I’ve been looking for it for so long and decided to look online where i found your site. Now i can once again make the most devine brownies. Thank you so much for such a great blog with wonderful recipes.

  5. The bomb recipe for brownies….. Pro Tip – Don’t be afraid to add some ice cream !

    1. Suebee Homemaker says:

      It’s definitely ice cream worthy! ๐Ÿ™‚

  6. Thanks for the memories, my mama used to make these in the 80โ€™s i had no idea the icing had marshmellows. Ive make them for years trying to duplicate that special chewiness. I like that it is quick and makes a whole bunch. I did get frustrated because the size jelly roll pan wasnt mentioned. The degrees on the oven was hard to find too. But other than that this is a keeper

    1. Suebee Homemaker says:

      Hi Karen! This recipe brings back SO many memories for me, and I’ve made it SO many times. ๐Ÿ™‚ The jelly roll pan is 12 x 17, and the brownies are baked at 350 degrees. I’m so glad you enjoyed these!

  7. Made this for the Super Bowl party and was a HUGE hit!! I think I did my mama proud!! Oh, and tell Mike it’s awesome with a scoop or two of ice cream, Vanilla or Cookies & Cream!!

    1. Suebee Homemaker says:

      I’m so glad, Shari! They are addicting, for sure! ๐Ÿ™‚

  8. This looks so rich and delicious! We love chocolate cake, this is on my to bake list! Thank you! I have been trying to subscribe to your blog and I keep getting this: ” Oops. Something went wrong. Please try again later.” I also want to subscribe to your Moms page but it keeps saying the same thing. I will keep trying, do know what is going on? Oh, also when you get home, don’t forget to say where you got your handy dandy tool!! Thank you!

    1. Suebee Homemaker says:

      Hi Lisa! I’m not sure why it’s not letting you subscribe, but if you private message me, I’ll set you up myself. Just send me an email to sue@suebeehomemaker.com. The Texas Sheet Cake Brownies are a SURE THING! I hope you try them. ๐Ÿ™‚

  9. Jackie Thill says:

    Remembering these from our childhood. Such decadent, chocolaty deliciousness, OMG…

    1. Suebee Homemaker says:

      Yup, these are sort of addicting! That frosting is OMG delish too!

  10. This is awesome! Loved by everyone!

    1. Suebee Homemaker says:

      I used to make these for ALL the kids birthday parties! ๐Ÿ™‚

  11. This sheet cake brings back memories from college. My aunt made this and I dream about it. Yours is EXACTLY this same. So good!!!

    1. Suebee Homemaker says:

      Thanks for your sweet comments, Michelle. We love them too!

  12. This is the BEST brownie recipe EVER. Make it!

    1. Suebee Homemaker says:

      Awww, thanks! ๐Ÿ™‚

  13. I love chocolate sheet cake! Yours looks so delicious and chocolatey! YUM!

    1. Suebee Homemaker says:

      Thank you Natalie! I hope you try it soon! ๐Ÿ™‚

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