These are my friend Janet's Double Chocolate Chip Cookies with a few alterations. They've become a family favourite. Most excellent with a cold glass of milk.
1 cup hard margarine, softened
2 cups sugar
2 teaspoons vanilla
2 - 2 1/2 cups all purpose flour
3/4 cup cocoa
1 teaspoon baking soda
1 teaspoon baking powder
1/2 teaspoon salt
2 cups Reece's Pieces (or peanut butter chips)
Cream margarine and sugar together. Add eggs and vanilla. Beat well. Add flour (start with 2 cups), cocoa, baking soda, baking powder and salt. Mix well. If the dough is too soft to hold a "ball" shape, add a little more flour. (it's not a stiff dough, but shouldn't "plop" onto the baking sheet. You should have soft cookie dough balls.) Stir in Reece's Pieces.
Shape into 2 inch balls (I use my ice cream scoop= about 1/4 cup per cookie) and place on greased cookie sheet about 3 inches apart. Cookies spread when they're baking, so be a little generous with the space on the first pan to see how much room they'll need.
Bake at 350*F for 10 minutes. Let stand on cookie sheet until slightly cooled, then transfer to cooling rack.
Yield: about 3 dozen cookies