Martha's Double-Chocolate Chunk Cookies

Ingredients in this Recipe

1 1/2 cups sugar
1 cup all purpose flour
1 stick (8 tablespoons) unsalted butter
1 teaspoon pure vanilla extract
1/2 cup unsweetened Dutch process cocoa powder
1/2 teaspoon baking soda
1/2 teaspoon salt
2 large eggs
8 ounces good quality semisweet chocolate (4 ounces coarsely chopped, 4 ounces cut into 1/4 inch chunks)

See Full Recipe at Martha Stewart