For making brownies:-
Blend butter, sugar, and vanilla in large bowl.
Add eggs and using a wooden spoon, beat well.
Combine flour, cocoa, baking powder, and salt; gradually blend into egg mixture.
Stir in nuts.
Spread in greased 9 inch square pan.
Bake at 350 degree farenheit for 20 to 25 minutes or until brownie begins to pull away from edges of pan.
For making frosting:-
7)Cream butter, cocoa, corn syrup and vanilla in small mixer bowl.
Add confectioners sugar and milk; beat to spreading consistency.
:- Makes about 1 cup frosting.
Spread it over the brownies as soons they come out of the oven.
Cool it completely.
Cut into square pieces and store in air tight container.