3-Ingredient Secret-Center Cookie Cups Prep: 55 minutes | Total: 1 hr. 10 minutes | Ingredients: 3 | Serves: 36 Easy Pillsbury peanut butter cookie dough bakes up with a sweet chocolaty surprise inside each bite. Cut up your favorite candy bar into little pieces for the surprise chocolaty center. No pastry bag? No problem. Use a spoon to add a dollop of frosting to each cookie cup for the final step.