In a large bowl, whisk together all of the dry ingredients: oats, flour, and salt.
In a medium bowl, whisk together all of the wet ingredients: peanut butter, maple syrup, coconut oil, flax egg and vanilla. Whisk until smooth.
Pour the wet mixture over the dry mixture. Using a rubber spatula or wooden spoon, stir and fold the ingredients together until well combined. Fold in chocolate chips and peanuts.
Cover the bowl and place into the freezer for 15-20 minutes—this chills the dough and hardens it for easier rolling.
Remove bowl from freezer. Scoop about 2 tablespoons of cookie dough into your hands and roll into balls. Enjoy! Storing instructions below.