Line an 8 x 8-inch pan with parchment paper and set aside.
In a large mixing bowl, add your peanut butter, keto maple syrup, and coconut flour and mix well. If the batter is too thin, add more coconut flour.
Transfer the batter to the lined pan and press firmly in place. If desired, melt the chocolate chips and spread over the top.
Refrigerate the bars for 30 minutes, before slicing them and serving.
Notes
* Coconut flour can be substituted for double the amount of almond flour. If the batter is too thin, add more until thick and smooth. TO STORE: Leftovers can be stored in the refrigerator, covered, for up to four weeks. TO FREEZE: Place the bars in a ziplock bag and store them in the freezer for up to six months.