In large bowl, combine cake mix, butter, egg; mix at low speed until combined. Stir in pecans. Reserve 1 cup for topping. Press remaining mixture evenly in bottom of greased pan.
Beat cream cheese in medium bowl until fluffy. Add remaining filling ingredients and beat at medium speed until smooth. Pour over crust; sprinkle with reserved topping.
Bake for 35 to 40 minutes or until center is puffed and edges are lightly browned. Cool completely. Cut into bars and store in refrigerator. Enjoy.