3/4 cup butter, softened
3/4 cup granulated sugar
3/4 cup firmly packed dark brown sugar
2 large eggs
1 1/2 teaspoons vanilla extract
2 1/4 cups plus 2 tablespoons all-purpose flour
1 teaspoon baking soda
3/4 teaspoon salt
1 (12-ounce) package semisweet chocolate morsels
Beat butter and sugars at medium speed with an electric mixer until creamy. Add eggs and vanilla, beating until blended.
Combine flour, soda, and salt in a small bowl; gradually add to butter mixture, beating well. Stir in morsels. Drop by tablespoonfuls onto lightly greased baking sheets.
Bake at 350° for 8 to 14 minutes or until desired degree of doneness. Remove to wire racks to cool completely.
Peanut Butter-Chocolate Chip Cookies: Decrease salt to 1/2 teaspoon. Add 1 cup creamy peanut butter with butter and sugars. Increase flour to 2 1/2 cups plus 2 tablespoons.
Proceed as directed. (Dough will look a little moist.)
Oatmeal-Raisin Chocolate Chip Cookies: Reduce flour to 2 cups. Add 1 cup uncooked quick-cooking oats to dry ingredients and 1 cup raisins with morsels.