Ultimate Chocolate Brownies

3/4 C Hershey's cocoa

1/2 t baking soda

2/3 C butter or margarine, melted and divided

1/2 C boiling water

2 C sugar

2 eggs

1 1/3 C all purpose flour

1 t vanilla extract

1/4 t salt

1 C Hershey's semi-sweet chocolate chips or mini chips

one bowl buttercream frosting

Heat oven to 350. Grease rectangular pan, 13x9x2 inches, or two square pans, 8x8x2 inches. In medium bowl combine cocoa and baking soda. Blend in 1/3 C melted butter. Add boiling water; stir until mixture thickens. Stir in sugar, eggs and remaining 1/3 C melted butter; stir until smooth. Add flour, vanilla and salt; blend completely. Stir in chocolate chips. Pour into prepared pan(s). 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(s); frost with one-bowl butter cream frosting. Cut into squares. About 3 dozen brownies.