Place chocolate in a microwave safe bowl. Microwave for 30 seconds, stir, and continue for 10 second intervals until melted.
Place 16 mini muffin liners on a baking sheet or in a large container that will fit in the freezer. Spoon a teaspoon of chocolate into each and place in the freezer for 5 minutes until set.
Remove from freezer and add 1-2 teaspoons of nut butter to each then add another 1-2 teaspoons of chocolate on top of the nut butter layer.
Place back in freezer and allow to set, approximately 15 minutes. Store in freezer until ready to eat.