Line a mini muffin tin with 8 paper liners and set aside. In a small bowl combine peanut butter and maple syrup. Stir until well combined.
In a separate bowl, (something with a pourable spout would be best) combine cacao powder, melted coconut oil and maple syrup. Mix ingredients together until a thin chocolate liquid appears.
Carefully pour a little liquid chocolate into each muffin cup until the bottom is just covered. You want a thin layer of chocolate on the bottom, but not too much because you want enough chocolate to use for the top. Place muffin pan into the freezer for about 1 minute.
While chocolate hardens in the freezer, slice banana. Remove muffin pan from freezer and spoon peanut butter into each cup until all gone. Carefully press 1-2 banana slices on top of each peanut butter cup until the peanut butter slightly spreads into the hardened chocolate.
Pour remaining liquid chocolate on top of each peanut butter banana cup until fully coated. Sprinkle with sea salt and place in freezer for 5 minutes or until chocolate is fully hardened.
Store in freezer in an airtight container for up to three months.
Notes
chocolate- you can easily sub out the homemade chocolate with a dark chocolate bar. Simply melt one dark chocolate bar with 1 teaspoon of coconut oil on stove top. Add both ingredients to a small sauce pan and heat on low heat, stirring constantly until a thin chocolate sauce appears. peanut butter- feel free to sub out peanut butter with any nut butter of your choice. You can also evenly swap it out with sun butter if you have a nut allergy.