3/4 c. 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
1/4 tsp. salt
1 c. semi-sweet chocolate chips
One Bowl Buttercream Frosting

Heat oven to 350 degrees. Grease rectangular 13 x 9 x 2 inches. In 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 pan(s). Bake 35-40 minutes or until brownies begin to pull away from the sides of the pan. Cool completely in pan(s). Frost.