Here's the recipe for those that don't want to click the link...
Bite Sized Peanut Butter Cup Cookies
1 1/3 cups all purpose flour
1/2 tsp baking soda
1/2 tsp salt
1/2 cup butter, slightly softened
1 cup white sugar
1 large egg
1 tsp vanilla extract
1/2 cup peanut butter, smooth or crunchy
36 peanut butter cups (pref. dark chocolate pb cups)
Preheat oven to 350F. Line 36 mini muffin cups with paper liners.
In a medium bowl, whisk together flour, baking soda and salt.
In a large bowl, cream together butter and sugar until light and fluffy. Beat in egg and vanilla extract, followed by the peanut butter. With the mixer on low speed, gradually incorporate flour mixture until dough comes together.
Drop 1 tablespoon of dough into each prepared mini muffin cup. Take a peanut butter cup (unwrapped) and press it firmly dough into the dough until the dough rises almost to the top of the peanut butter cup.
Bake for about 14-16 minutes, until the edges of the cookie dough start to brown slightly. Allow cookies to cool completely in the pan. The peanut butter cups themselves may sink as they cool, so don’t worry if they do.
When cookies are cool, serve immediately or store in an airtight container.
Makes 36.
http://bakingbites.com/wp-content/uploads/2014/05/DSC_0422.jpg