2 1/2 cups semi-sweet chocolate chips, divided use
1/2 cup unsweetened Dutch process cocoa powder
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
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-chocolate mixture. Stir in the remaining 3/4 cup 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 prepared pan.
Bake for 25 minutes in a 350 degree F oven. Cool before slicing.