3/4 c. Hershey's cocoa
1/2 tsp. baking soda
2/3 c. butter, melted & 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
1 c. Hershey's semi-sweet chocolate chips or mini chips

Heat oven to 350 degrees. Grease 13"x9"x2" rectangular pan or 2 (8"x8"x2") square pans. In a medium bowl combine 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 completely. Stir in chocolate chips. Pour into prepared pans. Bake 35 to 40 minutes for rectangular pan, 30 to 55 minutes for square pans or until brownies begin to pull away from sides of pan. Cool completely in pans.