Pecan Pie Cake

1 yellow cake mix 

1 egg 

1/2 c. melted butter 

1 1/2 c. white Karo syrup [light corn syrup] 

3 eggs 

1/2 c. dark brown sugar, packed 

1 tsp. vanilla 

1 to 2 c. chopped pecans 

Mix cake mix, 1 egg, and melted butter well. Reserve 2/3 cup of this batter. Spread the rest into a greased & floured 9 x 13 inch pan and bake at 325 degrees F. for 15 minutes or until lightly browned. Mix reserved 2/3 cup batter with syrup, 3 eggs, brown sugar, vanilla and pecans. Pour this filling on top of crust and cook about 50 to 60 minutes at 325 degrees.