If wanted, press a few additional Reese's Pieces and/or peanut butter chips onto the tops of the cookies. This makes them look pretty!
If you use unsalted butter you might want to increase the salt to 1/4 teaspoon.
You can find the baking Reese's Pieces in the baking aisle. They are mini size. Or, just use the regular sized Reese's Pieces. I've used both kinds and I prefer the miniature Reese's Pieces.