In a large bowl combine the warmed peanut butter, protein, collagen, vanilla, and sweetener. Pour mixture into a wax paper lined dish (I used an 8x8 dish).
Melt chocolate chips and coconut oil in the microwave or stovetop in 30 second increments, stirring in between, and pour on top of the peanut layer, spreading evenly with a spatula.
Sprinkle sea salt on top and freeze for an hour, cut into desired slices, and enjoy!