In a small glass bowl, melt the coconut oil in the microwave. Should take like 20 seconds.
Add in the mini chocolate chips; stir well, and coat in the melted coconut oil. These should also start melting. Put in the microwave for 20 seconds. Take out the bowl and stir. Microwave for another 20 seconds, take out and stir. Do this in 20 second increments (to not burn the chocolate) until everything is melted and shiny.
Coat the bottom and sides of the cup molds with the melted chocolate. Try to get it as even as possible without making it too thick. Put in freezer for 5-10 minutes.
In a medium bowl, mix together the PBFit powder, powdered sugar, water and vanilla extract until well mixed.
Once the chocolate is hardened, evenly distribute the peanut butter mixture across the cups.
Spread remaining melted chocolate on top. And put in freezer for another 5 - 10 minutes.