Heat oven to 350F. Grease square pan 9x9x2 inches. In large mixing bowl blend melted butter, sugar and vanilla. Add eggs; using a spoon, beat well. Combine flour, cocoa, baking powder and salt; gradually blend into egg mixture. Stir in nuts, if desired.
Spread in a prepared pan. Bake 20 to 25 minutes or until brownies begin to pull away from sides of pan. Cool; frost with Creamy Brownie Frosting. Cut into squares.
About 16 brownies.
About 1 cup frosting.
Cajun Country -- New Iberia, Louisiana