Preheat oven to 350° F. Grease a 13 x 9-inch pan; set aside.
Melt the margarine or butter in microwave; add cocoa powder and stir until smooth. Add sugar and eggs and beat well. In a separate bowl, combine flour, baking powder and salt. Add chocolate batter and beat well, about 2 minutes, until combined. Stir in chocolate chips.
Pour into prepared pan and bake at 350° F for 20 to 25 minutes. Cool in pan on wire rack. When brownies have cooled, cut into squares.
Preheat oven to 350° F. Grease a 13 x 9-inch pan; set aside.
Melt the margarine or butter in microwave; add cocoa powder and stir until smooth. Add sugar and eggs and beat well. In a separate bowl, combine flour, baking powder and salt. Add chocolate batter and beat well, about 2 minutes, until combined. Stir in chocolate chips.
Pour into prepared pan and bake at 350° F for 20 to 25 minutes. Cool in pan on wire rack. When brownies have cooled, cut into squares.