Preheat oven to 350º. Beat butter at medium speed with an electric mixer until creamy; gradually add sugar, beating well. Add eggs and vanilla; beat well. Add flour; beat at low speed until well blended. Stir in chocolate morsels. (If desired, store dough in an airtight container in refrigerator up to 1 week.)
Drop cookie dough by heaping tablespoonfuls 2 inches apart onto parchment paper-lined or lightly greased baking sheets.
Bake at 350° for 11 to 12 minutes or until lightly browned. (Bake chilled dough 12 to 13 minutes.) Cool on baking sheets on a wire rack 5 minutes; transfer to wire racks, and cool completely (about 30 minutes).