Combine the creamy peanut butter, protein powder, maple syrup, and coconut flour in a large mixing bowl.
Stir the mixture until a thick, pliable dough forms that does not stick to the hands.
Portion the dough into 12 equal pieces and roll each into a smooth sphere approximately 1 inch in diameter.
Place the spheres on a parchment-lined tray and freeze for 20 minutes to increase structural integrity.
Melt the dark chocolate chips and coconut oil together in a double boiler or microwave in 30-second intervals until smooth.
Using a dipping tool or fork, submerge each chilled protein ball into the melted chocolate until fully coated.
Return the coated truffles to the parchment paper and immediately top with crushed peanuts.
Refrigerate for at least 10 minutes to allow the chocolate shell to temper and set.