Filling
8 ounces cream cheese, softened
1/3 cup granulated sugar
1 egg
1/8 teaspoon salt
1 cup semisweet chocolate chips

In small mixer bowl, beat cream cheese, sugar, egg and salt until smooth and creamy. Stir in chocolate chips. Set aside.

Variations
Valentine Filling: Add 4 to 5 drops of red food color to Filling.
Peanut Butter Chip Filling: Omit chocolate; stir in 1 cup peanut butter chips.

Cupcakes
3 cups all-purpose flour
2 cups granulated sugar
2/3 cup Hershey's cocoa
2 teaspoons baking soda
1 teaspoon salt
2 cups water
2/3 cup vegetable oil
2 tablespoons white vinegar
2 teaspoons vanilla extract

Preheat oven to 350 degrees F.

In large mixer bowl, stir together flour, sugar, cocoa, baking soda and salt. Add water, oil, vinegar and vanilla extract. On medium speed, beat 2 minutes. Fill paper-lined muffin cups (2 1/2 inches in diameter) 2/3 full with batter. Spoon 1 level tablespoon Filling into center of each cupcake. Bake for 20 to 25 minutes or until wooden pick inserted in cake portion comes out clean. Remove from pan to wire rack. Cool completely.