Add the chopped chocolate to a bain-marie and simmer until the chocolate is completely melted.
Add 6 cupcake liners into a cupcake tray and pour in about 1/2 inch of chocolate into the base of each liner. Place in the freezer for 10 minutes to firm up.
Remove from the freeze, add in a tsp of peanut butter into each liner.
Now pour over the remaining chocolate into each liner to cover the peanut butter. Place back in the freezer for 10-15 minutes until the cups are solid.
Finally, sprinkle over some flakey sea salt (optional) and tuck in.
Notes
Step-by-Step Photos: My blog post includes helpful step-by-step photos to help guide you through making this recipe.Substitutions & Variations: I have included a list of these in the post above.To Store: Store in an airtight container on the counter for up to two days or in the fridge for up to two weeks.To Freeze: These will freeze in an airtight container for up to six months. Thaw in the fridge or on the counter.Tip 1: If you don't want to use a bain-marie, you can heat chocolate in the microwave in 30-second intervals, stirring in between.Tip 2: If you don't have chunks of chocolate, you can also use melted chocolate chips for this recipe.Tip 3: You could vary the size of these treats. Use a mini cupcake tray for mini peanut butter cups or a bigger one for big cups. You could even skip the muffin tin and lay it out in a baking dish for peanut butter chocolate bars.