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!
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.
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.