Put the chocolate chips and coconut oil in a microwave safe bowl. Stir to combine and then put it in the microwave for 90 seconds, stirring every 30 seconds until the chocolate is completely melted.
Line the mini muffin tray with mini cupcake liners and pour 1 teaspoon of melted chocolate into each cup. Put the tray in the freezer for 5 minutes to help it set up.
Remove tray from the freezer. Using 2 spoons, scoop 1 teaspoon of peanut butter with one spoon and use the other spoon to scrape it off the spoon and into the cup.
Pour 1 tablespoon of coconut oil into a small cup or bowl. Dip a clean spoon into it and use the spoon to smooth out the peanut butter ball, and press it into the edges. Having the oil on the spoon helps the peanut butter to not stick to the spoon.
Pour the melted chocolate into the remaining empty space in the cups, until each cup is filled to the top. Put the tray in the freezer for 10 minutes.
Remove the tray from the freezer and transfer it to a wire tray. Drizzle caramel sauce over each cup plus a sprinkle of sea salt.
Store leftover cups in an airtight container in the refrigerator for up to a week.