Oven Temp: 350 Soften Yeaast From Roll Mix In 1/4 Cup Warm Water. Combine The Mix And 1/4 Cup Sugar. Stir In The Yeast, Egg, Sour Cream And Butter. Mix Well. Place Dough In Greased Bowl, Turning Once. Cover And Chill 2 To 3 Hours. Turn Dough Onto Floured Surface. Roll The Dough Into A 18" Circle. Fit Into A 6 Cup Mold Ring, Allowing Some Dough To Hang Over The Edges.(Dough Will Cover The Center Hole.) Beat Cream Cheese, Sugar And Vanilla Till Smooth. Add Eggs, One At A Time, Beating Well After Each Addition. Pour Into Mold. Bring Dough From Sides Over The Top Of Filling. Seal To Center Of Mold. Cut An X In The Dough Covering The Center Home. Fold The Four Triangles Back Over Top Of Ring, Sealing To Outer Edges. Let Rise Until Almost Double, 1 To 1 1/2 Hours. Bake 35 To 40 Minutes Or Until Wooden Pick Inserted Into Filling Comes Out Clean. Cool In The Pan 10 Min. Turn Out On A Rack, Sprinkle With Confectioners Sugar And Serve.