Mix cream cheese and butter together

Add sugars and mix

Add egg and vanilla and mix

In separate bowl, combine flour, cornstarch, baking soda and salt and slowly add to mixture

Mix in white chocolate chips

Stir in sprinkles by hand

Cover and place in refrigerator for 30 minutes

Preheat oven to 350°

Place dough onto cookie sheets and slightly flatten

Bake for 8-10 minutes