1. Heat oven to 350°F. Grease 13x9x2-inch baking pan or two 8-inch square baking pans.
2. Stir together cocoa and baking soda in large bowl; stir in 1/3 cup butter. Add boiling water; stir until mixture thickens. Stir in sugar, eggs and remaining 1/3 cup butter; stir until smooth. Add flour, vanilla and salt; blend completely. Stir in chocolate chips. Pour into prepared pan.
3. Bake 35 to 40 minutes for rectangular pan, 30 to 35 minutes for square pans or until brownies begin to pull away from sides of pan. Cool completely in pan on wire rack. Frost with ONE-BOWL BUTTERCREAM FROSTING. Garnish with chocolate chips, if desired. Cut into squares. Makes 24 to 36 brownies.
ONE-BOWL BUTTERCREAM FROSTING
6 tablespoons butter or margarine, softened
2-2/3 cups powdered sugar
1/2 cup HERSHEY'S Cocoa
1/3 cup milk
1 teaspoon vanilla extract
Beat butter in medium bowl. Add powdered sugar and cocoa alternately with milk,
beating to spreading consistency (additional milk may be needed). Stir in vanilla.
About 2 cups frosting.