1 pkg. lemon or chocolate cake mix
1/2 c. melted butter
1 tsp. vanilla
1 pkg. (8 oz.) cream cheese
1 lb. powdered sugar
1 egg
1 c. pecans
3 (additional) eggs

Mix cake mix, butter, vanilla and egg and pecans. Press into greased and floured 13x9x2 pan. Mix together powdered sugar, cream cheese and 3 eggs. Pour over cake mixture. Bake 300 degrees for 1 1/2 hours.