FIRST STEP:

1 box yellow cake mix
1 tsp. vanilla
1 egg, beaten
1 stick butter, melted
2 c. pecans pieces

Mix and press into a greased 9"x13" pan.

SECOND STEP:

1 lb. powdered sugar
3 eggs, beaten
1 (8 oz.) pkg. cream cheese

Mix well and pour over first mixture. Bake at 300 degrees for 1 hour.