Chocolate Gooey Butter Cookies

8oz cream cheese, room temp
1 stick butter, room temp
1 egg
1 tsp vanilla extract
1 (18oz) box moist chocolate cake mix
Powdered Sugar, for dusting

In a large bowl with an electric mixer, cream the cream cheese and butter until smooth. Beat in the egg. Then beat in vanilla, beat in cake mix. COVER AND REFRIGERATE 2 HOURS. Roll chilled batter into TBS sized balls then roll into powdered sugar. Place on ungreased cookie sheet, 2 inches apart. Bake at 350 degrees for 12 minutes only! Cookies will remain soft and gooey. Cool completely and sprinkle with more sugar if desired. This is my new favorite chocolate cookie, it is soo soft, even the next day!