Preheat the oven to 350 degrees and line two cookie sheets with parchment paper
Using a large bowl, whisk the flour, baking soda, and salt
Using a standing mixer, beat the butter, sugar, vanilla, and eggs until combined, smooth and fluffy
Gradually whisk in the flour ingredients
Fold in the ground Oreos and chopped candy bars until combined
Using a medium cookie scoop, scoop some dough onto the cookie sheets and lightly press into a thick disk
Bake in the oven for 13-16 minutes or until firm around the edge
Remove from the oven and allow to cool completely
Using a standing mixer, beat the butter, powdered sugar, heavy whipping cream, and vanilla until combined and fluffy
Beat in the ground Oreos until combined
Scoop the frosting into the piping bag
Using the piping bag, pipe a thick ring of frosting in a circular motion to create the rings on the cookie
Place a mini Oreo in the center
Enjoy!