Self-Filled Cupcakes
["1 pkg. Duncan Hines chocolate or yellow cake mix", "1 (8 oz.) pkg. cream cheese, softened", "1/3 c. sugar", "1 egg", "Dash salt", "1 c. semi-sweet chocolate chips"]
["Preheat oven to 350\u00b0. Prepare cake mix according to package directions. Place paper cupcake liners in 30 muffin cups. Fill muffin cups 2/3 full of batter."]
["chocolate", "cream cheese", "sugar", "egg", "salt", "semi-sweet chocolate chips"]