Line a mini muffin tin with 12 paper liners.
Melt the dark chocolate and coconut oil in a microwave-safe bowl in 30-second intervals until smooth.
Spoon 1 teaspoon of melted chocolate into the bottom of each liner and freeze for 10 minutes.
Whisk together peanut butter, maple syrup, and sea salt in a small bowl.
Remove tin from freezer and place 1 teaspoon of peanut butter mixture into each cup, followed by 1/2 teaspoon of jam.
Pour the remaining melted chocolate over the jam layer to seal the cups.
Freeze for at least 30 minutes or until completely firm.
Store in the refrigerator or freezer until serving.