firmly packed light brown sugar
- Preheat oven to 325°. Lightly grease/spray cookie sheets; set aside.
- Beat first 4 ingredients until fluffy.
- Add sour cream, melted butter, and melted shortening; mix well.
- Gradually add flour, cocoa, baking powder and baking soda.
- Stir in nuts (if using them).
- Drop by spoonfuls onto greased cookie sheets at 325°F for 10-12 minutes. Do not over bake.
- Remove from oven and cool about 2 minutes before removing to a wire rack to cool completely.