Texas Sheet Cake Brownies (2024)

This post may contain affiliate links which won’t change your price but will share a commission.

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!

May our Triple Chocolate Brownies (delicious fudgy brownies) or Banana Sheet Cake next!

Best Texas Sheet Cake

There is SO much history in thisbrownie recipe for me. Norma Jean (my mom!) made this many times over the years for family gatherings, 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.

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.

Before there were strict rules at schools (no homemade treats now – boo), I even brought these to our elementary school for our boys’ classrooms. Those were the days.

Pro-Tip: Using a plastic knife is the easiest way to cut these brownies into squares without making a mess of the frosting. Try it!

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 powder, kosher salt, baking soda, and vanilla extract.
• Dairy – Just unsalted butter (yes, two sticks of butter!) and sour cream. I use the light version, but it doesn’t matter that much.
• Eggs
• Hot Water

Frosting Ingredients:

The following ingredients are needed to make the best warm chocolate frosting.

• 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.

How to make the best Texas Sheet Cake Brownies:

Step 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.

Step 2
Pour batter. Spray a largejelly roll panwith baking spray, and pour the cake batter in the prepared pan, smoothing it out evenly throughout.

Step 3
Bake. Bake the brownies in a preheated oven for approximately 25 minutes, or until a toothpick, when inserted, comes out clean. Baking time may vary.

Step 4
Make frosting. In a medium saucepan, combine the butter, sugar, and milk over medium heat. Bring to a boil, and then reduce heat. Add the marshmallows and chocolate chips, and stir until completely melted.

Step 5
Remove pan from heat and let the frosting set up slightly. This may take 30 minutes or so. You don’t want it too runny, but you also don’t want it too thick.

Step 6
Spread the chocolate icing on the brownies.When brownies are completely cool, spread the warm frosting on top, and smooth over the top with a spoon. This thin layer of chocolate frosting is my favorite party of these Texas brownies!

Step 7
Serve. Serve this sheet cake with a glass of milk or a cup of coffee. You might like my Caramel Latte or the best Cold Brew Coffee!

STORE the best chocolate cake at room temperature. Cover with plastic wrap or some aluminum foil for best results.

Recipe FAQs:

MORE Chocolate Desserts:

More chocolate, anyone? Here are MORE delicious recipes for you.

• Chocolate Muddy Buddies
• Chocolate Covered Ritz Pops
• Chocolate Zucchini Muffins
• Chocolate Cake for Two – our favorite little cakes for a romantic dinner!

Kitchen Tools Used: (affiliate links)

• Glass Mixing Bowls
• 9-inch wire whisk
• USA Pan Half Sheet Pan

Pleaselet me 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 onPinterest, and catch me onInstagram.

xoxo ~Sue