3/4 pound butter, melted
1 3/4 cups semi-sweet chocolate chips
1/2 cup Dutch cocoa
2 cups brown sugar
2 1/4 cups all-purpose flour
1/2 teaspoon baking powder
3/4 cup semi-sweet chocolate chips
1/2 cup nuts (pecans or walnuts), chopped
Melt butter in a saucepan. Add chips and stir until melted. Add melted mixture to cocoa in a bowl and combine. Set aside. In a separate bowl, whip eggs with brown sugar. Mix flour with baking powder and salt. Add this dry mixture to egg/ brown sugar mixture.
Mix in the butter/chips/cocoa combination. Stir in additional chocolate chips and nuts. (Some nuts and chocolate chips may be saved to sprinkle on top of the brownies before baking.) Spread batter into a greased 9 x 13-inch pan and bake for 25 minutes in a preheated 350 degree F oven. Cool before slicing.