4 cups semisweet chocolate chunks (I used Guittard chocolate wafers)
Preheat oven to 350º. Line baking sheets with parchment and set aside.
Cream butter, sugar and brown sugar till well combined. Add eggs, then vanilla and mix well. Add flour, baking soda and salt and mix till combined. Stir in chocolate chunks.
Drop by rounded tablespoonfuls onto cookie sheet, about 6 per sheet. Flatten slightly with moist hand. Bake 12-15 minutes, till just golden. Be careful not to over bake. Cool slightly on pan before moving to cooling rack.
Makes about 36.