Self-filling Cupcakes

I love these cupcakes!  The recipe came out of a cookbook from Oma's church, and I had the actual page for years; I don't know what happened to it but all I have now is a recipe card.  I made these yesterday for Daniel's birthday and I couldn't keep everyone out of them!

Self-filling Cupcakes

1pkg German Chocolate cake mix
1  8oz pkg cream cheese
1/2C sugar
1  6oz pkg chocolate chips
1 egg

Preheat oven to 350.  Prepare cake mix according to directions.  Fill paper-lined muffin tins 2/3 full with cake batter; set aside.  Mix cream cheese and sugar, add egg, beat until light and fluffy; stir in chocolate chips.  Drop mixture by teaspoon onto each cupcake.  Bake 25-30 minutes.  Yield: 36 cupcakes.