Heat oven to 350°F. Spray 24 mini muffin cups with cooking spray. Shape cookie dough into 24 (1-inch) balls; place in muffin cups.
Bake 15 to 18 minutes or until edges are lightly browned. Remove from oven; press 1 peanut butter cup candy into each cookie. Sprinkle each cookie with 1/2 teaspoon of the granola.