Texas Sheet Cake Brownies

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

4.77 from 13 votes

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!

Prep Time20 mins

Cook Time25 mins

Total Time45 mins

Course: Dessert

Cuisine: American

Keyword: Texas brownies, Texas Sheet Cake

Servings: brownies

Calories: 280kcal

Author: Sue Ringsdorf

Equipment

jelly roll pan

Ingredients

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

Instructions

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 (12x17) 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.

Video

Notes

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.

Nutrition