Preheat oven to 350 F
Combine the peanut butter, sugar and egg (baking powder & salt if you choose). Mix until smooth.
Add the chopped bacon and mix to incorporate.
Roll mixture into 1 inch (walnut sized) balls. Place on ungreased cookie sheet and flatten each ball with a fork.
Bake at 350 F for about 10 minutes.
Cool for 5-7 minutes then place on wire rack.