Texas Sheet Cake

Texas Sheet Cake

Ingredients:
2 cups all-purpose flour
2 cups granulated sugar
1 teaspoon baking soda
1/2 teaspoon salt
1 cup unsalted butter
1 cup water
1/4 cup unsweetened cocoa powder
2 large eggs
1/2 cup sour cream
1 teaspoon vanilla extract

For the Frosting:
1/2 cup unsalted butter
1/4 cup unsweetened cocoa powder
1/4 cup whole milk or cream
1 teaspoon vanilla extract
3 cups powdered sugar
1 cup chopped pecans or walnuts (optional)

Instructions: