1 box yellow cake mix (with pudding in the mix)
1 sm. vanilla instant pudding
4 eggs
3/4 c. Wesson oil
1 (8 oz.) sour cream
1 tsp. vanilla

Mix thoroughly. Batter will be thick. Set aside about 1 1/2 cups batter. To the rest add about 1 cup Hershey chocolate syrup and 1 package (6 ounces) semi-sweet chocolate chips. Mix well. Grease pan. Put 1/2 of chocolate mixture in cake pan, then add the 1 1/2 cups of yellow batter, then add the rest of the chocolate mixture. Bake at 350 degrees for 45-55 minutes. Frost!