Preheat the oven to 350 F. In a large bowl, mix together cake mix, peanut butter, eggs, and vegetable oil until smooth. Fold in sprinkles.
Roll the cookie dough into balls and flatten slightly. Place one peanut butter cup on each cookie dough and roll into a ball. Place onto a large ungreased baking sheet at least 2-inches apart. Bake for 10-12 minutes.