Place the chocolate chips in a bowl and melt in the microwave in 30 second increments, stirring until smooth.
Stir in the peanut butter, followed by the vanilla extract, and lastly the coconut flour (stir in each separately).
Line a loaf pan or other small dish with wax paper and pour in the fudge.
Top the fudge with sea salt flakes and place the pan in the freezer until set (around an hour or so).
Remove the fudge from wax paper and cut it into pieces.
Store any leftovers in an airtight container or ziploc bag in the freezer until ready to enjoy.
Notes
This recipe calls for no stir creamy peanut butter which is a pre-sweetened nut butter. This affects the texture, so be sure to look for "no stir" when purchasing.