1Heat oven to 350°F (325°F for dark or nonstick pans). In large bowl, mix cake mix, oil, vanilla and eggs with spoon until dough forms.
2Refrigerate dough 15 to 30 minutes or as needed for easier handling. Shape dough into 1-inch balls; roll in sugar. On ungreased cookie sheets, place balls about 2 inches apart.
3Bake 9 to 11 minutes or until set. Cool 1 minute; remove from cookie sheets to cooling racks. Cool completely, about 30 minutes. Store tightly covered.