Line 9x5 bread pan with parchment paper
Mix together peanut butter layer ingredients until well combined
Press peanut butter layers into lined pan
Melt chocolate, and stir in coconut oil, collagen, and peanut butter
Pour chocolate over peanut butter layer, then place in freezer to harden
Slice, sprinkle with flakey sea salt, and enjoy!
Keep stored in the freezer