Really good chocolate cookies recipe

Chocolate cookies
Ingredients

* 1 cup butter, softened
* 1 1/2 cups sugar
* 2 eggs
* 2 teaspoons vanilla extract
* 2 cups all-purpose flour
* 2/3 cup baking cocoa
* 3/4 teaspoon baking soda
* 1/4 teaspoon salt
* 1 (10 ounce) package vanilla or white chips
* 1/2 cup chopped pecans (optional)

Directions

1. In a mixing bowl, cream butter and sugar. Add the eggs, one at a time, beating well after each addition. Beat in vanilla. Combine the flour, cocoa, baking soda and salt; gradually add to creamed mixture. Stir in chips and pecans if desired.
2. Drop by tablespoonfuls 2 in. apart onto ungreased baking sheets. Bake at 350 degrees F for 10-12 minutes or until set. Remove to wire racks to cool.