Ingredients
1 cup butter, softened
2 eggs
2 teaspoons vanilla extract
2 cups all-purpose flour
⅔ cup cocoa powder
¾ teaspoon baking soda
¼ teaspoon salt
2 cups semisweet chocolate chips
Directions
Beat sugar, butter, eggs, and vanilla in a large bowl until light and fluffy.
Combine flour, cocoa powder, baking soda, and salt in another bowl; stir into butter mixture until well blended. Mix in chocolate chips. Drop spoonfuls of dough 2 inches apart onto ungreased cookie sheets.
Bake in the preheated oven just until set, 8 to 10 minutes. Cool slightly on the cookie sheets before transferring to wire racks to cool completely.