1 chocolate cake mix
1 (8 oz.) pkg. cream cheese, softened
2 tbsp. butter
1 tbsp. cornstarch
1 can condensed milk
1 egg
1 tsp. vanilla

Prepare cake mix. Beat well; grease and flour Bundt pan. Pour batter in pan. In mixing bowl beat cream cheese, butter and cornstarch until fluffy. Gradually add condensed milk, egg and vanilla until smooth. Bake in 350 degree oven for 50-55 minutes. Frost with chocolate frosting.