|(Minus the one I packed in my sister's lunch and the crispy edge I ate)|
Stir together cocoa and baking soda in large bowl; stir in half of the butter.
Bake 25 to 30 minutes for rectangular pan or 15 to 20 minutes for square pans or until brownies begin to pull away from sides of pan.
2-2/3 cups powdered sugar
1/2 cup cocoa
1/3 cup milk
1 teaspoon vanilla extract
Beat butter in medium bowl.
About 2 cups frosting.