Surprise Cupcakes - cooking recipe

Ingredients

1 (18 1/2 oz.) box chocolate cake mix
1 (8 oz.) pkg. cream cheese, softened
1/3 c. sugar
1 egg
dash of salt
1 tsp. vanilla
1 c. semi-sweet chocolate chips

Preparation

Preheat oven to 350\u00b0.
Grease and flour or line with paper baking cups (30 muffin cups); fill 2/3 full.