2 1/2  cups          all purpose flour
     1/3  cup           unsweetened cocoa
   3      teaspoons     baking powder
     1/2  cup           sugar
     1/2  cup           firmly packed brown sugar
     1/4  cup           butter or margarine -- softened
   3                    eggs
   1      cup           white vanilla chips
Heat oven to 350.  Spray 1 lare or 2 small cookie sheets with nonstick
cooking spray.  
Lightly spoon flour into measuring cup; level off.  In medium bowl, combine
flour, cocoa and baking powder; mix well.  In large bowl, combine sugar,
brown sugar and margarine; beat until well blended.  Add eggs; beat well.
 Add flour mixture; mix well.  Stir in white vanilla chips.
With spray coated hands, firmly shape dough into 3 rolls, about 7 inches
long.  Place rolls at least 3 inches apart on sprayed cookie sheet; flatten
each to form 3/4 inch thick rectangle, about 3 inches wide and 7 inches long.
Bake at 350 for 22 to 28 minutes or until rectangles are light golden brown
and centers are firm to the touch.  Place rectangles on wire racks; cool 5
minutes.
Wipe cookie sheet clean.  With serrated knife, cut each rectangle into 1/2
inch slices; place, cut side up on cookie sheet.
Bake at 350 for 6 to 8 minutes or until top surface is slightly dry.  Turn
cookies over; bake an additional 6 to 8 minutes or until top surface is
slightly dry.  Remove cookies from cookie sheets; cool completely on wire
racks.  Store tightly covered.  Makes about 4 dozen cookies.