3/4 c. Hershey's cocoa
1/2 tsp. baking soda
2/3 c. butter, melted and divided
1/2 c. boiling water
2 c. sugar
2 eggs
1 1/3 c. all-purpose flour
1 tsp. vanilla extract
1/4 tsp. salt
2 c. (12 oz. pkg.) Hershey's semi-sweet chocolate chips
1/2 c. coarsely chopped nuts (optional)

Heat oven to 350 degrees. Grease 13 x 9 x 2 inch baking pan. In medium bowl, stir together cocoa and baking soda; blend in 1/3 cup melted butter. Add boiling water; stir until mixture thickens. Stir in sugar, eggs, and remaining 1/3 cup melted butter; stir until smooth. Add flour, vanilla, and salt; blend well. Stir in chocolate chips and nuts, if desired. Pour into prepared pan. Bake 35 to 40 minutes or until brownies begin to pull away from sides of pan. Cool completely in pan. Cut into squares. About 36 brownies