Heat oven to 350°F. Butter 13x9-inch pan.
In large bowl, combine cake mix, butter and 1 egg; mix until well combined.
Press in bottom of buttered pan.
In small bowl, combine cream cheese, powdered sugar, vanilla and eggs; mix until smooth and creamy. Pour over crust.
Bake at 350°F. for 30 to 35 minutes or until lightly browned.
Serve warm or cool. Cut into squares; top with cherry pie filling.