Preheat your oven to 350 degrees. Line a baking sheet with parchment paper and set aside.
In a medium size bowl, mix together 1 cup of peanut butter with 1 egg. In another medium size bowl, mix together sugar, coconut flour, and baking powder.
With a wooden spoon, mix the wet and dry ingredients by slowly adding dry ingredients to wet. Add M&M candy pieces and mix with wooden spoon.
Roll about 1-2 tablespoons of dough between your palms and place on cookie sheet.
Then, take a fork, and press into dough. (The cookies don't really expand that much)
Bake cookies at 350 for 9-11 minutes.
Let your cookies cool for at least 10 minutes before serving. They need time to firm up!