Preheat oven to 325 degrees. Line a baking sheet with parchment paper.
Sift together the flower, chocolate protein powder, cocoa powder, and salt. Set aside. Beat together the melted coconut oil and maple syrup.
Add egg and vanilla. Mix. Add dry ingredients to wet. Mix.
Scoop into 1-inch balls and place on baking sheet; this should make 8 cookies.
Bake for 7-9 minutes. Transfer to a cooling rack.
Beat together all ingredients for the cream filling. Once cookies are cooled, spoon 1 TBSP filling onto each of the 4 cookies and sandwich with remaining 4 cookies. Enjoy!
Women (2 cookies): 445 cals; 24g fat; 49g carb; 16g protein
Men (3 cookies): 665 cals; 36g fat; 73g carb; 23g protein